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Physics-

General

Easy

Question

In a Ag voltameter 2.68 gm of silver is deposited in 10 min. The heat developed in $20 capital omega$ resistor during the same period will be

192 kJ
192 J
200 J
132 Kj

The correct answer is: 192 kJ

$I equals fraction numerator m over denominator Z t end fraction equals fraction numerator 2.68 over denominator fraction numerator 108 over denominator 96500 end fraction cross times 10 cross times 60 end fraction equals fraction numerator 2.68 over denominator 108 end fraction cross times fraction numerator 965 over denominator 6 end fraction almost equal to 4 A$
Energy $equals I to the power of 2 end exponent R t equals 4 to the power of 2 end exponent cross times 20 cross times 600 equals 192 k J.$

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