A) \[{{r}_{1}}-{{r}_{2}}\]
B) \[\frac{{{r}_{1}}+{{r}_{2}}}{2}\]
C) \[\frac{{{r}_{1}}-{{r}_{2}}}{2}\]
D) \[{{r}_{1}}+{{r}_{2}}\]
Correct Answer: A
Solution :
Key Idea: Current in the circuit is given by Ohm's law. Net resistance of the circuit \[={{r}_{1}}+{{r}_{2}}+R\] Net emf in series = E + E = 2EYou need to login to perform this action.
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