Question

Two wires a and b are of equal length, 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 different for both the wires.(b)if the resistance of the wire a is 4 times the resistance of wire b , calculate the (i)ratio of the cross sectional areas of the wires and (ii)the ratio of the radii of the wires.

Answer 1

Answer:(i) The resistivity of the two wires will be same.

(ii) The resistance of the two wires will be different.

(C)is in the attachment