Question
Question: A closed circuit consists of a resistor R, inductor of inductance L and a source of emf E are connec...
A closed circuit consists of a resistor R, inductor of inductance L and a source of emf E are connected in series. If the inductance of the coil is abruptly decreased to L/4 (by removing its magnetic core), the new current immediately after this moment is (before decreasing the inductance the circuit is in steady state) –
A
Zero
B
E/R
C
D
Answer
Explanation
Solution
Flux through a closed circuit containing an inductor does not change instantaneously.
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