The temperature coefficient of resistance of a wire is

PHYSICS · Single correct · A Level · Physics · Electricity · Electricity

Problem

The temperature coefficient of resistance of a wire is

0.00125 \text{ per } ^\circ\text{C}

. At

300 \text{ K}

, its resistance is

1 \text{ ohm}

. This resistance of the wire will be

2 \text{ ohm}

at. (1)

1154 \text{ K}

(2)

1100 \text{ K}

(3)

1400 \text{ K}

(4)

1127 \text{ K}

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