A solenoid with an iron core and a bulb is connected to a d.c. source. How does the brightness of the bulb change when the iron core is removed from the solenoid?
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Answered by
7
Answer:
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Explanation:
The brightness of the bulb remains unchanged because inductive reactance in a d.c. circuit is zero.
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Answered by
7
Answer :-
The reason is that when the iron core is taken out :-
The inductance decreases.
Due to this capacitive reactance also decreases.
So, brightness of the bulb changes.
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