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7. A resistance of 30 ohm is connected across 240v supply. If a resistance R ohm is connected in parallel with 30ohm resistor across the same supply, the current drawn becomes triple of original one The unknown resistor R is

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7. A resistance of 30 ohm is connected across 240v supply. If a resistance R ohm is connected in par..

Answer / mahesh

24=240(30+r)/30r
then r= 15 ohms

Is This Answer Correct ?    48 Yes 7 No

7. A resistance of 30 ohm is connected across 240v supply. If a resistance R ohm is connected in par..

Answer / hhdudh

10 ohms

Is This Answer Correct ?    7 Yes 11 No

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