A wire of 20Omega is immersed in ice. If...

A wire of `20Omega` is immersed in ice. If 10 A current is passed through this wire for 1 minute, ice completely melts. The mass of the ice is nearly `(L_("ice")=79.7"cal"g^(-1))`

3.5 g

359 g

540 g

3.5 kg

Text Solution

Verified by Experts

The correct Answer is:

Heat gained = Heat generated
`mL=I^(2)Rt`
`rArr" "m=(I^(2)Rt)/L`
= `(100xx20xx60)/(79.7xx42)" "(because1"cal"=4.2J)`
= 359 g

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