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Heat produced (cals) in a resistance R w...

Heat produced (cals) in a resistance R when a current I amperes flows through it fort seconds is given by the expression :

A

`(I ^(2) Rt)/(4.2)`

B

`(IR ^(2) t)/(4.2)`

C

`(4.2 IR)/(t ^(2))`

D

`(IRt ^(2))/(4.2)`

Text Solution

Verified by Experts

The correct Answer is:
A
`H = (I ^(2) Rt)/( J)= ( I ^(2) Rt)/( 4.2) cal`
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