Assertion (A) : A bulb connected in series with a solenoid coil is connected to an a.c. source. The bulb glow becomes dimmer when a soft iron core is introduced in the solenoid coil. Reason (R) : On introducing soft iron core in the solenoid coil, its inductance increases.

Assertion (A) : A bulb connected in series with a solenoid coil is con

1.	Assertion (A) : A bulb connected in series with a solenoid coil is connected to an a.c. source. The bulb glow becomes dimmer when a soft iron core is introduced in the solenoid coil. Reason (R) : On introducing soft iron core in the solenoid coil, its inductance increases.
Answer» If both assertion and reason are true and the reason is the correct explanation of the assertion. If both assertion and renson are true but reason is not the correct explanation of the assertion. If assertion is true but reason is FALSE. If the assertion is false but reason is true. Solution :On INTRODUCING soft iron core, the INDUCTANCE and hence reactance of solenoid coil increases. So the impedance of L-R CIRCUIT increases and current in the circuit decreases making the BULB dimmer.

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Assertion (A) : A bulb connected in series with a solenoid coil is connected to an a.c. source. The bulb glow becomes dimmer when a soft iron core is introduced in the solenoid coil. Reason (R) : On introducing soft iron core in the solenoid coil, its inductance increases.

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