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Byju's Answer

Standard XII

Physics

Resistance and Resistors

In case of fo...

Question

In case of four wires of same material, the resistance will be minimum when its length and diameter are respectively:

L and D

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2 L

and

D

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(L / 2)

and

2 D

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2 L

and

(D / 2)

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Solution

The correct option is C $(L / 2)$ and $2 D$
$R = ρ \frac{L}{A}$
So Resistance will be minimum for shortest length and biggest area , that is $L / 2$ and diameter $2 D$

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In case of four wires of same material, the resistance will be minimum when its length and diameter are respectively:

The correct option is C (L/2) and 2DR=ρLA So Resistance will be minimum for shortest length and biggest area , that is L/2 and diameter 2D

The correct option is C $(L / 2)$ and $2 D$
$R = ρ \frac{L}{A}$
So Resistance will be minimum for shortest length and biggest area , that is $L / 2$ and diameter $2 D$