Question

Find the net emf of the three batteries shown in figure –

• A. 8V
• B. 6V
• C. 2V
• D. 3V

Answer 1

Answer: (C)

2V

Answer 2

  

E_eq = $\frac{\frac{2}{1} - \frac{6}{1}}{\frac{1}{1} + \frac{1}{1}} = \frac{- 4}{2}$ = – 2V    E_eq = 4 – 2 = 2V