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A 5^(@)C rise in the temperature is obse...

A `5^(@)C` rise in the temperature is observed in a conductor by passing some current. When the current is doubled, then rise in temperature will be equal to

A

`16^(@)`C

B

`10^(@)` C

C

`20^(@)`C

D

`12^(@)` C

Text Solution

Verified by Experts

The correct Answer is:
C
On increasing the current twice, the rise in temperature will be four times.
As `H prop i^(2)` and `H prop T` of current is doubled, then
`H = 4H_(1)` and `T_(2) = 4T_(1) = 20^(@) C`
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