Magnetism and Electromagnetic Induction MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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The force on a charged particle in a magnetic field is zero when:
A. The particle moves parallel to the magnetic field
B. The particle moves perpendicular to the magnetic field
C. The magnetic field strength is zero
D. The particle has no charge
Answer: The particle moves parallel to the magnetic field
The magnetic field due to a current-carrying wire decreases with:
A. Increasing the distance from the wire
B. Increasing the current
C. Increasing the length of the wire
D. Decreasing the distance from the wire
Answer: Increasing the distance from the wire
The flux linkage in a coil can be increased by:
A. Increasing the number of turns in the coil
B. Increasing the magnetic flux density
C. Increasing the area of the coil
D. All of the above
Answer: All of the above
The magnetic field produced by a current-carrying wire follows:
A. The right-hand grip rule
B. Fleming's Right-Hand Rule
C. Fleming's Left-Hand Rule
D. Ampere's Law
Answer: The right-hand grip rule
The electric field produced by a changing magnetic field is:
A. Perpendicular to the magnetic field
B. Parallel to the magnetic field
C. In the same direction as the magnetic field
D. Zero
Answer: Perpendicular to the magnetic field
The phenomenon where a magnetic field is produced by a changing electric field is known as:
A. Electromagnetic induction
B. Faraday's Law
C. Ampere's Law
D. Maxwell's Equations
Answer: Maxwell's Equations
The unit of inductive reactance is:
A. Ohm
B. Henry
C. Tesla
D. Weber
Answer: Ohm
The magnetic flux density is also known as:
A. Magnetic induction
B. Magnetic permeability
C. Magnetic reluctance
D. Magnetic susceptibility
Answer: Magnetic induction
The term ‘Lenz’s Law’ describes:
A. The direction of the induced EMF
B. The relationship between magnetic flux and induced current
C. The effect of magnetic fields on electric currents
D. The strength of a magnetic field in a solenoid
Answer: The direction of the induced EMF