MCQ
The diagram shows four capacitors with capacitances and break down voltages as mentioned. What should be the maximum value of the external emf source such that no capacitor breaks down ? .......$kV$
- ✓$2.5$
- B$3.33$
- C$3$
- D$1 $
✓
Answer
Correct option: A.
$2.5$
a
Charge can not exceed $3 K C V$ on upper branch while on lower branch it can not exceed $6 K C V$.
Charge can not exceed $3 K C V$ on upper branch while on lower branch it can not exceed $6 K C V$.
$V_{1}+V_{2}=\frac{3}{3}+\frac{3}{2}=2.5 K V$
$V_{3}+V_{4}=\frac{6}{7}+\frac{6}{3}=\frac{20}{7} K V \Rightarrow E=2.5 K V$
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