A battery of e.m.f. 10 V is connected to resistance as shown in figure. The potential difference VA −VB the points A and B is
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a
−2V
b
2 V
c
5 V
d
2011 V
answer is B.
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Detailed Solution
Req = 5 Ω, Current i=105=2A and current in each branch = 1 APotential difference between C and A,VC −VA=1 ×1=1 V …..(i)Potential difference between C and B,VC −VB=1 ×3=3 V …..(ii)On solving (i) and (ii), VA −VB=2V