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Two wires A and B are of equal lengths, ...

Two wires `A and B` are of equal lengths, different cross-sectional areas and made of the same metal.
(a) (i) Name the property which is same for both the wires.
(ii) Name the property which is the different for both the wires
(b) I fthe resistance of wire `A` is four times the resistance of wire `B`, calculate
(i) the ratio of the cross-sectional area of the wires.
(ii) the ratio of the radii of the wires.

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