Physics · Magnetic Effects of Current
Consider a long solenoid of length 5 m and radius 0.1 m, which has 2000 turns per unit length. If this solenoid carries a current of 2 A, the magnetic energy stored in the solenoid is represented as nπ2 × 10-3 J. Then the value of n is:
- 1160✓
- 280
- 3200
- 4120
Correct answer
160
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