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Self-inductance L of a coil is defined by
AL = I / Φ_B
BL = ε · I
CL = R · t
DL = Φ_B / I
Answer & Solution
Correct answer: D. L = Φ_B / I
L = N Φ_B / I — the flux linkage per unit current. SI unit is the henry (H) = V·s/A. The induced emf is ε = −L dI/dt.
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