Question

# In the circuit shown, current through 25 V cell is

A
7.2A
B
10A
C
12A
D
14.2A

Solution

## The correct option is C $$12 A$$Applying $$KVL$$ in loops $$CDBAC, EFBAE, GHBAG, \: and \: IJBAI$$. We get:$$30 - i_1 \times 11 =-25$$ or $$i_1=5\, A$$$$20 + i_2 \times 5 =25$$ or $$i_2=1\, A$$$$5 - i_3 \times 10 =-25$$ or $$i_3=3\, A$$$$10 + i_4 \times 5 =25$$ or $$i_4=3\, A$$Current through $$25 V$$ cell is $$i_1 + i_2 + i_3 + i_4 = 12 \, A$$Physics

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