magnetism mcqs with answers

Important Magnetism MCQs with Answers

The Magnetism MCQs with Answers for Pak Army provides a set of multiple-choice questions related to magnetism and its applications. This article contains practice questions for Technical Cadet Course, Army Education Officers, and Army EME Officers. It is also more important for Pak Navy Civilian Jobs tests.

Physics Questions related to Magnetism MCQs (Part-1)

  • The SI unit of magnetic field strength is the ______________. (tesla (T))
  • The direction of the magnetic field lines around a straight current-carrying wire can be determined using the ______________ rule. (right-hand)
  • The strength of the magnetic field around a current-carrying wire decreases with ______________ from the wire. (distance)
  • According to Ampere’s law, the magnetic field inside a long, straight current-carrying wire is ______________ proportional to the current and inversely proportional to the distance from the wire. (directly)
  • In a magnetic field, a charged particle experiences a force that is ______________ to both the magnetic field and the velocity of the particle. (perpendicular)
  • The region of space where the magnetic forces on moving charged particles are experienced is called the ______________. (magnetic field)
  • The strength of the magnetic field inside a solenoid is directly proportional to the ______________ of the current passing through it. (number of turns)
  • A magnetic field exerts a force on a current-carrying wire placed in it, known as the ______________ force. (magnetic)
  • Magnetic field lines outside a bar magnet emerge from the ______________ pole and converge toward the ______________ pole. (north, south)
  • The phenomenon of electromagnetic induction is based on the principle that a changing magnetic field induces an ______________ current in a nearby conductor. (electric)
  • The Earth’s magnetic field is generated by the movement of molten ______________ in its outer core. (iron)
  • The device used to measure the strength and direction of a magnetic field is called a ______________. (magnetometer)
  • The magnetic field inside a current-carrying loop of wire is ______________ at its center. (strongest)
  • The magnetic field strength at a point near a magnet depends on the ______________ of the magnet. (distance)
  • A magnetic field can be shielded or weakened by using materials with high ______________ permeability. (magnetic)
  • The phenomenon where a changing magnetic field induces an electric current in a conductor is known as ____________. (electromagnetic induction)
  • The SI unit of electric current is the ____________. (ampere (A))
  • According to Faraday’s law of electromagnetic induction, the magnitude of the induced electromotive force (EMF) is directly proportional to the ____________ of the change in magnetic flux. (rate)
  • The phenomenon where an electric current produces a magnetic field is known as ____________. (electromagnetism)

Physics Questions related to Magnetism MCQs (Part-2)

  • The direction of the induced current in a conductor can be determined using ____________’s right-hand rule. (Fleming’s)
  • The coil of wire in an electric generator is known as the ____________. (armature)
  • The device used to measure electric current is called a ____________. (ammeter)
  • The relationship between current, voltage, and resistance is described by ____________’s law. (Ohm’s)
  • The force experienced by a charged particle moving through a magnetic field is known as ____________ force. (Lorentz)
  • The rate at which electrical energy is converted to other forms of energy in an electric circuit is measured in ____________. ( watts (W))
  • The property of a material that resists the flow of electric current is known as ____________. (resistance)
  • The electromagnetic waves that are used for communication purposes, such as radio and television, belong to the ____________ region of the electromagnetic spectrum. (radio frequency)
  • The strength of the magnetic field produced by a current-carrying wire is directly proportional to the ____________ of the current and inversely proportional to the distance from the wire. (magnitude)
  • The device used to store electric charge in an electric circuit is called a ____________. (capacitor)
  • The device used to change the voltage of an alternating current (AC) is called a ____________. (transformer)
  • The process of generating an induced current in a conductor by changing the magnetic field is called ______________. (magnetic induction)

Past Physics Magnetism MCQs for Air Force with Answers

Magnetism MCQs in Physics Test for Air Force with Answers ensures that Air Force personnel are well-prepared and equipped with the necessary knowledge of magnetism to effectively handle magnetic-based technologies and equipment in naval operations. This article contains practice questions for GD Pilots, PAF Aeronautical Engineering, PAF Air Defence Branch, PAF Logistics Branch, PAF Admin & Special Duty Branch.

Physics Questions related to Magnetism MCQs (Part-3)

  • The SI unit of magnetic flux is the ______________. (Weber (Wb))
  • According to Faraday’s law of electromagnetic induction, the magnitude of the induced electromotive force (EMF) is directly proportional to the ______________ of the change in magnetic flux. (rate)
  • The device used to generate a changing magnetic field is called a ______________. (generator)
  • The phenomenon where a changing current in one circuit induces a current in a nearby circuit is known as ______________. (mutual induction)
  • The direction of the induced current in a conductor can be determined using ______________’s right-hand rule. (Faraday’s)
  • The property of a material that affects its ability to conduct magnetic flux is called ______________. (magnetic permeability)
  • The process of reducing or eliminating the effect of induced currents in a conductor by using a closed conducting loop is known as ______________. (magnetic shielding)
  • The device used to measure magnetic flux is called a ______________. (flux meter)
  • Lenz’s law states that the induced current in a conductor always flows in a direction that opposes the ______________ that produced it. (change)
  • The phenomenon of self-induction occurs when a changing current in a coil induces an ______________ in the same coil. (electromotive force (EMF))
  • The ratio of the induced electromotive force (EMF) to the rate of change of magnetic flux is known as ______________. (self-inductance)
  • The process by which a changing magnetic field induces an electric current in a closed conducting loop is the basis for ______________. (electric generators)
  • The device used to store electrical energy in the form of a magnetic field is called a ______________. (inductor)
  • The strength of the induced electromotive force (EMF) in a conductor is directly proportional to the ______________ of the magnetic field and the rate of change of the magnetic field. (strength)
  • Magnetic hysteresis is the phenomenon of ______________ in a magnetic material when the magnetic field is changed. (lagging magnetization)
  • The shape of the magnetic hysteresis loop depends on the ______________ of the magnetic material. (magnetic properties)

Physics Questions related to Magnetism MCQs (Part-4)

  • The area enclosed by the hysteresis loop represents the ______________. (energy loss)
  • The magnetic property that determines the extent of the hysteresis loop is ______________. (coercivity.)
  • The point at which a magnetic material becomes magnetized is called the ______________ point. (saturation)
  • The remanent magnetization is the residual magnetization left in the material after the magnetic field is ______________. (removed)
  • The coercive force is the ______________ required to reduce the magnetization of a material to zero after it has been magnetized. (applied magnetic field strength)
  • Soft magnetic materials have ______________ coercivity and are used in applications where rapid magnetization and demagnetization are required. (low)
  • Hard magnetic materials have ______________ coercivity and retain their magnetization even after the applied magnetic field is removed. (high)
  • The hysteresis loss in a magnetic material is converted into ______________. (heat)
  • The magnetic hysteresis loop is a plot of ______________ versus the applied magnetic field. (magnetization)
  • The shape of the hysteresis loop for a given material depends on factors such as its ______________ and temperature. (composition)
  • The hysteresis loop for a ferromagnetic material is wider than that for a ______________ material. (paramagnetic)
  • The ______________ of a material determines its ability to retain a magnetic field after the applied field is removed. (remanence)
  • The ______________ of a material is a measure of its ability to resist changes in magnetization. (magnetic coercivity)
  • Magnetic resonance is a phenomenon that occurs when atomic or nuclear spins ______________ with an external magnetic field. (interact)

Important Magnetic Field MCQs with Answers

Magnetic Field MCQs with Answers is a set of multiple-choice questions that focus on various aspects of magnetic fields for PN Cadets,  Navy Operation Branch, Mechanical Engineering Branch, Navy Ordnance Branch.

Physics Questions related to Magnetism MCQs (Part-5)

  • The technique that utilizes magnetic resonance to create detailed images of the internal structures of the body is called ______________. (magnetic resonance imaging (MRI))
  • The frequency at which magnetic resonance occurs is known as the ______________ frequency. (resonance)
  • In nuclear magnetic resonance (NMR), the spins of ______________ are commonly studied. (atomic nuclei)
  • The magnetic field strength required to achieve resonance is known as the ______________ field strength. (resonance)
  • The ______________ effect is the phenomenon where magnetic resonance signals from different substances are shifted due to their chemical environment. (chemical shift)
  • The technique that uses magnetic resonance to measure the characteristics of substances, such as their molecular structure and chemical composition, is called ______________. (nuclear magnetic resonance (NMR) spectroscopy)
  • The ______________ is a powerful magnet used in magnetic resonance imaging and spectroscopy. (superconducting magnet)
  • The ______________ is a device used to generate a radiofrequency field for magnetic resonance experiments. (RF coil)
  • The relaxation times, known as ______________ and ______________, are important parameters in magnetic resonance. (T1 (spin-lattice relaxation time) and T2 (spin-spin relaxation time))

Physics Questions related to Magnetism MCQs (Part-6)

  • The ______________ effect is the phenomenon where the resonance frequency of a substance changes due to the presence of nearby magnetic fields. (magnetic field inhomogeneity)
  • The phenomenon of ______________ occurs when magnetic resonance signals from different spins cancel each other out, resulting in a loss of signal intensity. (destructive interference)
  • The ______________ is a mathematical transformation used to convert the time-domain signal in magnetic resonance to the frequency-domain spectrum. (Fourier transform)
  • The phenomenon of ______________ is the ability of certain atomic nuclei to absorb and re-emit electromagnetic radiation at specific frequencies in the presence of a magnetic field. (resonance absorption)
  • The ______________ equation describes the relationship between the resonance frequency, magnetic field strength, and the gyromagnetic ratio of a substance. (Larmor equation)
  • Magnetic fields in astrophysics are generated by the motion of ______________. (charged particles)
  • The ______________ is a measure of the strength of a magnetic field. (magnetic field intensity)
  • The unit used to measure magnetic field strength is the ______________. (Tesla (T))
  • Magnetic fields play a crucial role in shaping the structure and ______________ of celestial objects. (dynamics)
  • The ______________ effect is the phenomenon where charged particles are deflected by magnetic fields. (magnetic deflection)
  • A ______________ is a type of celestial object with an extremely strong magnetic field and emits powerful bursts of electromagnetic radiation. (magnetar)
  • ______________ is the study of the behavior of magnetized plasmas in astrophysical environments. (Magnetohydrodynamics (MHD))
  • The ______________ is a region around a black hole where magnetic fields are believed to play a significant role in the accretion process. (magnetosphere)
  • The ______________ is a theoretical model that describes the generation and amplification of magnetic fields in astrophysical objects. (dynamo theory)
  • ______________ are powerful jets of charged particles that are accelerated by magnetic fields and observed in various astrophysical phenomena. (Astrophysical jets)
  • The ______________ effect is the process by which a changing magnetic field induces an electric current in a conducting medium. (magnetic induction)
  • The ______________ is a measure of the degree to which a magnetic field is distorted or twisted. (magnetic helicity)
  • The ______________ is a region of space where charged particles trapped by a planet’s magnetic field create a protective shield against solar radiation. (magnetosphere)
  • The ______________ is a theoretical limit on the strength of a magnetic field in the universe. (critical magnetic field)

Physics Questions related to Magnetism MCQs (Part-7)

  • The ______________ effect is a phenomenon where the rotation of a celestial object generates a magnetic field. (dynamo)
  • ______________ is a medical imaging technique that uses magnetism to visualize internal structures of the body. (Magnetic resonance imaging (MRI))
  • The ______________ is a device that uses electromagnetism to convert electrical energy into mechanical motion. (Electric motor)
  • ______________ is a method used to separate magnetic materials from non-magnetic materials.(Magnetic separation)
  • ______________ is the phenomenon where a changing magnetic field induces an electric current in a nearby conductor. (Electromagnetic induction)
  • The ______________ is a device that measures the strength and direction of a magnetic field. (Magnetometer)
  • ______________ is a technique used to store and retrieve digital information using magnetized particles on a storage medium. (Magnetic recording)
  • The ______________ is used in particle accelerators to steer charged particles along a desired path. (Magnetic focusing)
  • The ______________ is a device that generates a magnetic field by passing an electric current through a coil of wire. (Electromagnet)
  • ______________ is the process of magnetizing a material to create a permanent magnet. (Magnetization.)
  • __________________ is a non-destructive testing method that uses magnetism to detect defects or cracks in materials. (Magnetic particle testing)
  • ____________ is a technique used to determine the magnetic properties of materials. (Magnetic characterization)
  • ________ is a device used to measure the strength of the Earth’s magnetic field. (Magnetometer)
  • ________ is a technique used in magnetic resonance imaging (MRI) to manipulate the alignment of atomic nuclei. (Radio frequency pulse)
  • ____________ is a method of producing electricity from the movement of a conductor in a magnetic field. (Electromagnetic induction)
  • ____________ is a technique used to separate isotopes based on their magnetic. Properties.  (Separation of magnetic isotopes.)

See More

You May see More Past Papers for Tests Preparation

Internet MCQs

Basic Internet MCQs

Internet MCQs Online multiple-choice questions (MCQs) are a great tool for people getting ready for the entrance exams of prestigious military branches including the Army, Navy, and Pakistan Air Force (PAF). These multiple-choice questions and…
Read More Basic Internet MCQs
Computer Hardware

Computer Hardware MCQs

Computer Hardware MCQs Questions and Answers In the Army, Navy, and Pakistan Air Force (PAF) initial academic exams, Computer Hardware MCQ Questions ans Answers are crucial. These Computer Hardware multiple-choice questions (MCQs) address fundamental computer…
Read More Computer Hardware MCQs
everyday science mcqs

Everyday Science MCQs

 Everyday Science MCQs Everyday Science MCQs are an essential component of the academic assessments administered for civilian positions in the Pakistan Air Force, Army, and Navy, including LDC and UDC. The broad science subjects covered…
Read More Everyday Science MCQs

Similar Posts