Two metallic wires A and B are made using copper. The radius of wire A is r while its length is l. A dc voltage V is applied across the wire A, causing power dissipation, P. The radius of wire B is 2r and its length is 2l and the same dc voltage V is applied across it causing power disspation P1. Which one of the following is the correct relationship between P and P1?

Two metallic wires A and B are made using copper. The radius of wire A

1.	Two metallic wires A and B are made using copper. The radius of wire A is r while its length is l. A dc voltage V is applied across the wire A, causing power dissipation, P. The radius of wire B is 2r and its length is 2l and the same dc voltage V is applied across it causing power disspation P1. Which one of the following is the correct relationship between P and P1?
A.	P = 2P1
B.	P = P1/2
C.	P = 4P1
D.	P = P1
Answer» C. P = 4P1