Resistance of a long wire will be ___ the resistance of short wire

more than

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less than

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two times

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half

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Solution

The correct option is A
more than

Let a wire of length l, surface area A and resistivity $ρ$ .

Then, its resistance $R = \frac{ρ l}{A}$

For constant surface area of the wire, Resistance is directly proportional to its length, i.e. more the length of the wire, more will be the resistance.

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Resistance of a long wire will be ___ the resistance of short wire

The correct option is A more than Let a wire of length l, surface area A and resistivity ρ. Then, its resistance R=ρlA For constant surface area of the wire, Resistance is directly proportional to its length, i.e. more the length of the wire, more will be the resistance.

The correct option is A
more than

Let a wire of length l, surface area A and resistivity $ρ$ .

Then, its resistance $R = \frac{ρ l}{A}$

For constant surface area of the wire, Resistance is directly proportional to its length, i.e. more the length of the wire, more will be the resistance.