Physics · Magnetic Effects of Current
The inductance per unit length near the middle of a long solenoid is given by which expression? (Where μ0 = permeability of free space, n = number of turns per unit length, and d = diameter of the solenoid)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 14 μ0 πn2 d2
- 2( μ0 π n d2 )
- 34 μ0 π ( nd2 )
- 4μ0 π ( nd2 )2✓
Correct answer
μ0 π ( nd2 )2
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