MCQ
In the circuit shown below, calculate the current flowing through 20V cell.
- A12A
- B15A
- C12.5A
- D12.3A
✓
Answer
- 12.5A
Explanation:
Here, we can apply Kirchhoff’s loop rule in closed loops ADCBA, AEFBA, AHGBA, and AIJBA. Thus, we get
20 + 10 – 5I1 = 0 → I1 = 6A
-5 + 20 – 15I2 = 0 → I2 = 1A
25 + 20 – 10I3 = 0 → I3 = 4.5A
-15 + 20 – 5I4 = 0 → I4 = 1A
Therefore, the current flowing through the 20V cell = 6 + 1 + 4.5 + 1 = 12.5A
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