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Resistance and Resistivity

Resistance and Resistivity problem 32

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The potential difference across a metal wire is kept constant. The length and the diameter of the wire are both varied. The type of metal is kept the same. How is the current in the wire related to and ?

It is directly proportional to and inversely proportional to .
It is directly proportional to and inversely proportional to .
It is inversely proportional to and directly proportional to .
It is inversely proportional to and directly proportional to .

main author and content editor: Daniel Owoyomi