Question

A conductor of resistance R1 (4ohm) and an electric lamp of resistance R2 are connected to a 12V battery as shown in figure. The net resistance of the circuit is 4/3 ohm. (A) Which physical quantity remains constant in above combination of resistors? (B) Find the total current drawn in the circuit.

Answer 1

(A)

Potential in all resistors are same (V = V1 = V2)

(B)

I = V/R

I = 12 / (4/3)

I = 9 A