Physics · Magnetism
A very long solenoid (axis along the z-direction) of n turns per unit length carries a current which increases linearly with time, i = Kt. What is the magnetic field B inside the solenoid at a given time t?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1B = μ0 c n K t ẑ
- 2B = μ0 n K t (x̂ + ŷ)
- 3B = μ0 n K ẑ
- 4B = μ0 n K t ẑ✓
Correct answer
B = μ0 n K t ẑ
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