A heating element has a resistance of 100 $\Omega $ at room temperature. When it is connected to a supply of 220 V, a steady current of 2 A passes in it and temperature is 500oC more than room temperature. what is the temperature coefficient of resistance of the heating element ?

Question

A heating element has a resistance of 100 $\Omega $ at room temperature. When it is connected to a supply of 220 V, a steady current of 2 A passes in it and temperature is 500^oC more than room temperature. what is the temperature coefficient of resistance of the heating element ?

0.5 $ \times $ 10^$-$4 ^oC^$-$1

5 $ \times $ 10^$-$4 ^oC^$-$1

1 $ \times $ 10^$-$4 ^oC^$-$1

2 $ \times $ 10^$-$4 ^oC^$-$1

Solution

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