Physics · Electromagnetic Induction
A solenoid consisting of 2000 turns is uniformly wound over a length of 0.3 m and has a cross-sectional area of 1.2 × 10-3 m2. A secondary coil with 300 turns is closely wound around the central region of the solenoid. If the current in the solenoid, initially 2 A, is reversed in 0.25 s, what is the magnitude of the EMF induced in the secondary coil?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 10.024 V
- 21.900 V
- 31.200 V
- 40.048 V✓
Correct answer
0.048 V
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