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Heat is supplied uniformly at the rate of 100W to 1.0 x 10

Heat is supplied uniformly at the rate of 100W to 1.0 x 10-2kg of a liquid for 20 seconds. If the temperature of the liquid rises by 5oC, then the specific heat capacity of the liquid is

A.

2.0 x 102Jkg-1k-1

B.

2.0 x 102Jkg-1

C.

4.0 x 104Jkg-1k-1

D.

4.0 x 104kg-1

E.

8.4 x 103Jkg-1k-1

View answer & explanation

Correct answer is C

Heat energy = Electrical energy

mc\(\theta\) = power x time

5 x 1 x 10-2 x C = 100 x 20

C = 4.0 x 104Jkg-1k-1

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