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Olympiad workbook

Exam: Olympiad workbook
Subject: NSEP
Chapter: Current Electricity

Olympiad workbook · NSEP · Current Electricity

A resistor R is connected to a parallel combination of two...

A resistor

R

is connected to a parallel combination of two identical batteries each with emf

E

and an internal resistance

r

. The potential drop across the resistance

R

is

Options

A $\frac{2 E R}{2 R+r}$
B $\frac{E R}{R+2 r}$
C $\frac{E R}{2 R+r}$
D $\frac{2 E R}{R+2 r}$

Correct answer

A. $\frac{2 E R}{2 R+r}$

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