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An electric current of 2.0 A passes thro...

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

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The correct Answer is:
A, C
`I = 2 A, R = 25 Omega`
`t = 1 min = 60 sec`
` Heat developed = i^2 Rt `
`= (2xx 2 xx 25 xx 60 ) `
`=100xx60J = 6000 J`
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HC VERMA-THERMAL AND CHEMICAL EFFECT OF ELECTRIC CURRENT-Exercises
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  14. Find the thermo-emf developed in a copper-silver thermocopule when the...

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