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A direct current of 2 A and an alternati...

A direct current of 2 A and an alternating current having a maximum value of 2 A flow through two identical resistances. The ratio of heat produced in the two resistances will be

A

`1:1`

B

`1:2`

C

`2:1`

D

`4:1`

Text Solution

Verified by Experts

The correct Answer is:
C
`H(DC)=I^(2)Rt=2^(2)RT `joule
`H(AC)I^(2)Rt=(I_0)/(sqrt(2))^(2) Rt=(2^2)/(2)Rt`
`(H(DC))/(H(AC))=2/1`.
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