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A lamp L is connected to an ac source al...

A lamp L is connected to an ac source along with an air core inductor as shown in the Figure. How is the brilliance of the lamp affected if core made of following material is inserted inside the inductor? (a) Iron (b) Copper (c) Iron sheets pasted together with insulation in between [laminated Iron core] In which case the lamp will be least bright?

Text Solution

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The correct Answer is:
(i) Brilliance of lamp decreases
(ii) Brilliance increase
(iii) Brilliance decrease
The lamp is least bright with laminated iron core.
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