Identify the correct expression for the current through resistor when resistors and…

PHYSICS · Single correct · A Level · Physics · Electricity · Electricity

Problem

Identify the correct expression for the current

I_1

through resistor

R_1

when resistors

R_1

and

R_2

are connected in parallel and the total current supplied is

I_{\text{t}}

. (a)

I_{\text{t}}\dfrac{R_1}{R_1+R_2}

(b)

I_{\text{t}}\dfrac{R_1R_2}{(R_1+R_2)^2}

(c)

I_{\text{t}}\dfrac{R_2}{R_1+R_2}

(d)

I_{\text{t}}\dfrac{R_2}{R_1}