What happens to the resistance of the wire if its radius increases by two times?explain with expression.( 2m)
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The cross-sectional area of the wires will affect the amount of resistance. ... The area of cross-section is given as πr2. When the radius of the wire is doubled it means the area of cross-section is increased by four times. Hence, the resistance of a wire is reduced to one-fourth if its radius is doubled.
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