A long solenoid with 10 turns per cm has a small loop of area 3 cm 2 placed inside…
Physics · Class 12 · CBSE — Electromagnetic Induction
A long solenoid with 10 turns per cm has a small loop of area 3 cm2 placed inside, normal to the axis of the solenoid. If the current carried by the solenoid changes steadily from 2 A to 4 A in 0.2 s, what is the induced voltage in the loop, while the current is changing?
- 4.2 × 10–8 V
- 2.8 × 10–8 V
- 7.3 × 10–6 V
- 3.8 × 10–6 V
Answer
(D) 3.8 × 10 –6 V
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