Question

A battery of e.m.f. 10 V is connected to resistance as shown in figure. The potential difference $V _ { A } - V _ { B }$ between the points A and B is

• A.
• B.
• C.
• D.

Answer 1

Answer: (B)

Answer 2

$R _ { e q } = 5 \Omega$, Current and current in each branch = 1A

Potential difference between C and A,

.......(i)

Potential difference between C and B,

......(ii)

On solving (i) and (ii) $V _ { A } - V _ { B } = 2$ volt

Shot Trick : $\left( V _ { A } - V _ { B } \right) = \frac { i } { 2 } \left( R _ { 2 } - R _ { 1 } \right) = \frac { 2 } { 2 } ( 3 - 1 ) = 2 V$