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Question: Answered & Verified by Expert
Which of the following is a correct statement?
PhysicsCurrent ElectricityCOMEDKCOMEDK 2014
Options:
  • A Heat produced in a conductor varies directly as the current flowing.
  • B Heat produced in a conductor varies inversely as the current flowing.
  • C Heat produced in a conductor varies directly as the square of the current flowing.
  • D Heat produced in a conductor varies inversely as the square of the current flowing.
Solution:
2128 Upvotes Verified Answer
The correct answer is: Heat produced in a conductor varies directly as the square of the current flowing.
Heat produced in a conductor is given as
$$
\begin{array}{ll}
& H=i^{2} R t \\
\Rightarrow & H \propto i^{2}
\end{array}
$$
where, $i=$ current, $R=$ resistance and $t=$ time.

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