1.

An electric current of `2.0` A passes through a wire of resistance `25 Omega`. How much heat will be developed in 1 minute?

Answer» `i = 2A, R = 25 W, t = 1min = 60 s `
Heat developed `=i^2 Rt = (2 xx 2xx 25 xx 60) = 100 xx 60 J`
`= 6000J`.


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