A heater coil rated at 1000 W s connecte...

A heater coil rated at 1000 W s connected to a 110 V mains. How much time will take to melt 625 gm of ice at `0^(@)C`. (for ice `L=80(Cal)/(gm)`)

`100s`

`150s`

`200s`

`210s`

Text Solution

Verified by Experts

The correct Answer is:

`JQ=Pxxt`
`JxxmL=Pxxt`
`1xx625xx10^(-3)xx(80xx4.2)/(10^(-3))=1000xxt`
`t=210s`

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