Question

An arc lamp requires a direct current of 10A at 80V to function. If it  is connected to a 220V (rms), 50 Hz AC supply, the series inductor needed  for it to work is close to:

A

80H

B

0.08H

C

0.044H

D

0.065H

Medium
JEE Mains

Solution

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Correct option is D)

Resistance of lamp by ohm's law,

When inductor is connected in series and source is applied,
Given, for lamp to work,
Solving, 

Video Explanation

Solution To Question ID 472790
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