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An Ac voltage is represented by e=220 si...

An Ac voltage is represented by e=220 sin `(100pi)` t volt and is applied over a resistance of 110 ohm. Calculate the heat produced in 7 min.

A

`11xx10^(3)` cal

B

`22xx10^(3)` cal

C

`33xx10^(3)` cal

D

`25xx10^(3)` cal

Text Solution

Verified by Experts

(b)`H=l_(v)^(2)(RT)/J cal`
`=((sqrt2)^(2)xx110xx7xx60)/4.2 ( :.l_(rms)=(l_(0))/sqrt2=(220//110)/sqrt2=sqrt2)`
`=22xx10^(3) cal`
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