Question

2) Two copper wires have the same voltage across them and the same length, but one wire has twice the diameter as the other. How much power is dissipated in the wire with twice the diameter compared to the other wire?

A) 1/4 as much 

B) 1/2 as much 

C) the same amount 

D) twice as much 

E) four times as much

Answer 1

Some length of wines are def diameter of Ri= S. f = use one is d the other will be ad Re: g. 1 A Td² II (edg2 U Ri= usl uRq Rq = sl こ Td2 12 So Resistance of first wire is 4 times of resistance of ve second wire Pes Piz Bosne чR, R2 P2 So P nd wire in Now power 2 is a times of first so option E es conect onR Pe = up

Thanks for asking.