A direct current if 2A and an alternatin...

A direct current if 2A and an alternating current having a maximum value of 2A flow through two identical resistances. The raito of heat produced in the two resistances in the same time interval 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=4Rt`
`H_(AC)=((i_(0))/sqrt(2))^(2)Rt=((2)/(sqrt(2)))^(2)Rt=2Rt`

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