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QNEET-2013-Ph-1531: NEET 2013 Physics - Class 12 NEET-2013-Ph-1531 Solution: A coil of self-inductance L is connected in series with a bulb…
A coil of self-inductance L is connected in series with a bulb B and an AC source. Brightness of the bulb decreases when a capacitance of reactance is included in the same circuit. an iron rod is inserted in the coil. frequency of the AC source is decreased. number of turns in the coil is reduced.
Multiple Choice Options
- A a capacitance of reactance X C = X L is included in the same citcuit.
- B an iron rod is inserted in the coil.
- C frequency of the AC source is decreased.
- D number of turns in the coil is reduced.
Step-by-Step Verified Solution
If a bulb B and AC source are connected in series with self-inductance coil, then in such case the brightness of the bulb decreases when an iron rod is inserted in the coil which further increases impedance of the circuit.