Question 230: Current Electricity

Question

The resistance of a conductor at 15$$^\circ$$C is 16$$\Omega$$ and at 100$$^\circ$$C is 20$$\Omega$$. What will be the temperature coefficient of resistance of the conductor?

Accepted Answer

16 = R
0
[1 + $$\alpha$$ (15 $$-$$ T
0
)]
20 = R
0
[1 + $$\alpha$$ (100 $$-$$ T
0
)]
Assuming T
0
= 0$$^\circ$$C, as a general convention.
$$\Rightarrow$$ $${{16} \over {20}} = {{1 + \alpha  	imes 15} \over {1 + \alpha  	imes 100}}$$
$$\Rightarrow$$ $$\alpha$$ = 0.003$$^\circ$$C
$$-$$1

Answer

0.010$$^\circ$$C$$-$$1

Answer

0.033$$^\circ$$C$$-$$1

Answer

0.003$$^\circ$$C$$-$$1

Answer

0.042$$^\circ$$C$$-$$1

Current Electricity

The resistance of a conductor at 15$^\circC is 16\Omega and at 100^\circC is 20\Omega$. What will be the temperature coefficient of resistance of the conductor?

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