Q.

The current flowing through a conductor connected across a source is 2A  and 1.2A at 0C and 100C . respectively. The current flowing through the conductor at 50C will be ____  ×102mA.

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answer is 15.

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Detailed Solution

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Current at 0C=VR0=2

Current at  100C=VR0(1+100α)=1.2

Dividing,

(1+100α)=21.2=2300°C-1

Current at 50C

=VR0(1+50)α=21+50×2300=1.5 A

=15×102mA.

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