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The resistance of a conductor is 5Omega ...

The resistance of a conductor is `5Omega` at `50^(@)`C and `6Omega` at `100^(@)C`. The resistance at `0^(@)C` is

A

1 ohm

B

2 ohm

C

3 ohm

D

4 ohm

Text Solution

Verified by Experts

The correct Answer is:
D
`R_(1)/R_(2) =(1+ alphat_(1))/(1 + alpha t_(2)) rArr 5/6 = (1+ alpha xx 50)/(1+ alpha xx 100) rArr alpha = 1/200 "per"^(@) C`
`R_(t_(1)) = R_(0)(1 + alphat) rArr 5 = R_(0) (1 +1/200 xx 50) rArr R_(0) = 4 Omega`
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