AP POLYCET PHYSICS Multiple Choice Questions (MCQs)

AP POLYCET Physics - Electromagnetism MCQs (106 to 120)

106. What is the unit of magnetic field strength?
     A) Ampere
     B) Tesla
     C) Coulomb
     D) Ohm
     Answer: B) Tesla
107. Which law states that the magnetic field around a current-carrying conductor is circular?
     A) Ampere’s Law
     B) Gauss’s Law
     C) Faraday’s Law
     D) Lenz’s Law
     Answer: A) Ampere’s Law
108. The force on a charged particle moving in a magnetic field is maximum when the angle between the velocity of the particle and the magnetic field is:
     A) 0°
     B) 45°
     C) 90°
     D) 180°
     Answer: C) 90°
109. The magnetic field inside a solenoid is:
     A) Zero
     B) Uniform and strong
     C) Uniform and weak
     D) Non-uniform
     Answer: B) Uniform and strong
110. What is the direction of magnetic field lines outside a magnet?
     A) From south to north
     B) From north to south
     C) Perpendicular to the surface
     D) Parallel to the surface
     Answer: B) From north to south
111. The magnetic field due to a current-carrying conductor is:
     A) Directly proportional to the current
     B) Inversely proportional to the current
     C) Independent of the current
     D) Inversely proportional to the square of the current
     Answer: A) Directly proportional to the current
112. Which of the following is the unit of magnetic flux?
     A) Ampere-meter
     B) Weber
     C) Tesla
     D) Volt
     Answer: B) Weber
113. What is the formula for calculating the magnetic force on a charged particle moving in a magnetic field?
     A) F = qvB
     B) F = qv/B
     C) F = q/Bv
     D) F = qB/v
     Answer: A) F = qvB
114. The magnetic field at the center of a circular loop of current is:
     A) Zero
     B) Maximum
     C) Minimum
     D) Varies with time
     Answer: B) Maximum
115. The force on a current-carrying wire placed in a magnetic field depends on:
     A) Magnetic field strength
     B) Current
     C) Length of the wire
     D) All of the above
     Answer: D) All of the above
116. Which of the following is a vector quantity?
     A) Electric potential
     B) Magnetic field
     C) Electric charge
     D) Work done
     Answer: B) Magnetic field
117. In which direction does the magnetic field produced by a current-carrying conductor circulate?
     A) Clockwise
     B) Anticlockwise
     C) Radial
     D) Circular
     Answer: A) Clockwise (if the current is flowing from right to left)
118. What is the force experienced by a current-carrying conductor when placed in a magnetic field called?
     A) Electrostatic force
     B) Magnetic force
     C) Gravitational force
     D) Centripetal force
     Answer: B) Magnetic force
119. The phenomenon of electromagnetic induction was discovered by:
     A) Ampere
     B) Faraday
     C) Coulomb
     D) Gauss
     Answer: B) Faraday
120. Which of the following devices works on the principle of electromagnetic induction?
     A) Transformer
     B) Electric fan
     C) Electric heater
     D) Incandescent bulb
     Answer: A) Transformer

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