Question

6.Two wires A and B are of equal length, different cross sectional areas and made of 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 wire A is four times the resistance of wire B, calculate (i) the ratio of the cross sectional areas of the wires and (ii) The ratio of the radii of the wire.

Answer 1

(a)  (i) Resistivity
      (ii)Resistance
(b)  (i) 1:4
      (ii)1:4

Answer 2

A1 resistive the as the metal is same
A2 resistance as different cross sectional area
A3 1:4
A4 1:4