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Alternating Current Applied to an Inductor

In the A.C. c...

Question

In the A.C. circuit shown, keeping ' $K$ ' pressed, if an iron rod is inserted into the coil, the bulb in the circuit

A

Gets damaged

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B

Glows less brightly

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C

Glows with same brightness (as before the rod is inserted)

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D

Glows more brightly

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Solution

The correct option is B Glows less brightly
The inductance of Coil will increase, Due to which impedance increases ,So due to increase in impedance the current will decrease and bulb will glow less brightly .

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