In a conductor, the voltage applied across the ends of the conductor is proportional to the current through the conductor resistance through the conductor
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Consider a wire of length L and circular cross section of radius a. The ends of the wire are maintained at a potential difference of V. Let the current in the wire be I and assume that the metal of the wire obeys Ohm's Law, J = σ E where σ is the metal's conductivity (which is a real constant). Prove that the problem parameters must be related as V = I R and give the expression for the resistance, R, of the wire.
Timothy J.
it states that the current is directly proportional to the voltage and inversely proportional to the resistance
Madhur L.
For an ohmic conductor, current is inversely proportional to voltage. inversely proportional to resistance. Independent of resistance. d. independent of voltage.
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