According to Joule's law, if the potential difference across a conductor having a material of specific resistance remains constant,then the heat produced in the conductor is directly proportional to
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a
ρ
b
ρ2
c
1ρ
d
1ρ
answer is D.
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Detailed Solution
P=V2R but R=ρlA ⇒ P=V2ρl/A = AV2ρl. Since AV2lis constant as per given conditions so P ∝1ρ.
According to Joule's law, if the potential difference across a conductor having a material of specific resistance remains constant,then the heat produced in the conductor is directly proportional to