STANDARDPhysics-Electromagnetic Induction
STANDARD Physics Induced EMF and Flux Change MCQ Question
Type: MCQ-numerical-Medium-Class 12
In a coil of resistance 100 Ω, a current is induced by changing the magnetic flux through it as shown in the figure. The magnitude of change in flux through the coil is
A
200 Wb
B
225 Wb
C
250 Wb
D
275 Wb
Correct Answer
Option C
Detailed Explanation
The induced emf (ε) is |ε| = |-dφ/dt|. The change in magnetic flux is calculated using the area under the current-time graph: Δφ = R × (1/2) × 10 × 0.5 = 250 Wb.
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