STANDARDPhysics-Electromagnetic Induction
STANDARD Physics Induced EMF and Current MCQ Question
Type: MCQ-numerical-Medium-Class 12
A circular ring of diameter 20 cm has a resistance of 0.01 Ω. The charge that will flow through the ring if it is turned from a position perpendicular to a uniform magnetic field of 2.0 T to a position parallel to the field is about
A
63 C
B
0.63 C
C
6.3 C
D
0.063 C
Correct Answer
Option C
Detailed Explanation
The change in magnetic flux induces an emf, which causes a charge to flow. Using the formula q = (Bπr²)/R, we find the charge to be approximately 6.3 C.
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