Current Electricity Charging Discharging Of Capacitors Question 721
Question: Three batteries of emf 1V and internal resistance $ 1\Omega $ each are connected as shown. Effective emf of combination between the points PQ is
Options:
A) zero
B) 1V
C) 2V
D) (2/3)V
Show Answer
Answer:
Correct Answer: A
Solution:
[a] $ E _{net}=\frac{E _{1}r _{2}-E _{2}r _{1}}{r _{1}+r _{2}}\text{ or }E _{net}=\frac{2-2}{2+1}=0 $
BETA
