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A 20 V 5 watt lamp is used in ac main 22...

A `20 V` 5 watt lamp is used in ac main `220 V` and frequency 50 c.p.s.
Capacitance of capacitor, to be put in series to run the lamp

A

`2 * F`

B

`4 * F`

C

`6 * F`

D

`8 * F`

Text Solution

Verified by Experts

The correct Answer is:
B
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