Physics

Problem

Two metallic wires,

P

and

Q

, are represented by straight lines passing through the origin on the same

V

–

I

graph. The slope of the line for wire

P

is twice the slope of the line for wire

Q

. If a potential difference of

6\,\text{V}

is applied across each wire, what is the ratio of currents

I_P : I_Q

flowing through them? a)

2:1

4:1

1:2

1:4