Teaching UP TGT Mock Test Series 2025 Electrician and Wireman

According to Joule’s law, if the potential difference across a conductor of resistivity ρ remains constant, then the heat produced in the conductor is proportional to

1
\(\frac{1}{\rho }\)
2
\(\frac{1}{{\sqrt \rho }}\)
3
ρ2
4
ρ
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