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In the A.C. circuit shown, keeping ' \( K \) ' pressed, if an iron rod is inserted into the coil, the bulb in
the circuit,
Options:
the circuit,
Solution:
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Verified Answer
The correct answer is:
glows less brightly
If an iron rod is inserted into the coil, the inductive reactance in the circuit will increase thereby increasing the
effectiveinductance of the circuit. Therefore, the potential differenceand thus, the current in the circuit will decrease and
hence bulb glows less brightly
effectiveinductance of the circuit. Therefore, the potential differenceand thus, the current in the circuit will decrease and
hence bulb glows less brightly
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