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In a coil, the current changes from –2 A to 2 A in 0.2 s and induces an emf of 0.1 V. The self inductance of the coil is

Asked in JEE Main 6th April 2nd Shift 2024 · Self-inductance and self-induced EMF

Answer: (1) 5 mH

Step-by-step solution

Δ I=2-(-2)=4 A.

L=(ε Δ t)/(Δ I)=(0.1×0.2)/4=5×10⁻³ H =5 mH.

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