Resistances of 6 ohm each are connected in the manner shown in adjoining figure. With the current 0.5 ampere as shown in figure, the potential difference `V_(P) - V_(Q)` is

Options

A. 3.6 V
B. 6 V
C. 3 V
D. 7.2 V

Answer

C

Explanation

`V_(P)-V_(Q)=[(6)/(3)+(12xx6)/(12+6)] xx (1)/(2)=(2+4) (1)/(2)=3V`