What is the self-inductance of a long solenoid with a magnetic core of relative permeability μ_r? - ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS Quiz | GKFix.in

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What is the self-inductance of a long solenoid with a magnetic core of relative permeability μ_r?

A. L = μ_0 n A l
B. L = μ_r μ_0 n A / l
C. L = μ_r μ_0 n² A l
D. L = μ_0 n² A / l

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