two wires A and B are of the equal length, different cross sectional areas and made of same metal. Q. Name the property which is same for both the wires. Q Name the property which is different for both the wires. Q If the resistance of wire A is 4 times the resistance of B, calculate the ratio of cross section area of wires. Q ratio of radii of the wire.
Resistance ( R ) of a conductor varies directly as its length ( l ) and inversely as its cross - sectional area ( A ) at a given temperature.