Question

If three cells are connected in parallel as shown in figure, then equivalent emf would be:

• A. $E_{eq}=\displaystyle\sum_{i=0}^{3}E_i/r_i/\displaystyle\sum_{i=0}^{3}r_i$
• B. $E_{eq}=\displaystyle\sum_{i=0}^{3}r_i/E_i/\displaystyle\sum_{i=0}^{3}1/E_i$
• C. $E_{eq}=\displaystyle\sum_{i=1}^{3}E_i/r_i/\displaystyle\sum_{i=1}^{3}1/r_i$
• D. $E_{eq}=\displaystyle\sum_{i=1}^{3}r_i/E_i/\displaystyle\sum_{i=1}^{3}r_i$

Answer 1

Answer: (C)

$E_{eq}=\displaystyle\sum_{i=1}^{3}E_i/r_i/\displaystyle\sum_{i=1}^{3}1/r_i$

Answer 2

The correct option is(C):$E_{eq}=\displaystyle\sum_{i=1}^{3}E_i/r_i/\displaystyle\sum_{i=1}^{3}1/r_i$