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a bulb connected in series with a solenoid is lit by ac source. If a soft iron core is inroduced in the solenoid ,will the bulb glow brighter?

a bulb connected in series with a solenoid is lit by ac source. If a soft iron core is inroduced in the solenoid ,will the bulb glow brighter?


 

Grade:11

3 Answers

Chetan Mandayam Nayakar
312 Points
9 years ago

Inductors do not irreversibly consume energy. On average they neither consume nor generate energy. Therefore the bulb glows with the same brightness.

Saumy Shukla
11 Points
4 years ago
On inserting a soft iron core inside a solenoid(or inductor) the intensity of magnetic field increases and due to ac supply, change in magnetic flux increases and according to Faraday`s Second Law Of EMI the opposing emf will increase due to which the glow of the bulb decreases.
sfafs
12 Points
3 years ago
As above said due to induced emf the brightness decreases but if we let it stay for some more time it will regain its original brightness because inductor get nullified which is said in the first statement

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