Circuit analysis with changing resistance · CAP 2003 #17

Physics · electromagnetism

Problem

In the circuit below we increase the resistance

R_2

. If

I_j

is the current through resistor

R_j

(

j = 1,2,3

), then [Figure: Circuit diagram with three resistors - R1 in series with parallel combination of R2 and R3] (a)

I_1

and

I_2

both increase; (b)

I_1

decreases and

I_2

increases; (c)

I_1

and

I_2

both decrease; (d)

I_1

increases and

I_2

decreases.