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The resistance of a metal wire is 10 Ome...

The resistance of a metal wire is `10 Omega `. A current of 30 mA is flowing in it at `20^@ `C. If p.d. across its ends is constant, then its temperature is increased to `120^@ C`, then the current flowing in the wire will be in mA`( alpha = 5 xx 10^(-3//0) C)`

A

20

B

15

C

10

D

40

Text Solution

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The correct Answer is:
A
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