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The diagram shown four capacitors with c...

The diagram shown 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? [Hint: First of all find out the break down voltages of each branch. After that compare tham.]

A

`2.5kV`

B

`10//3kV`

C

`3kV`

D

`1kV`

Text Solution

Verified by Experts

The correct Answer is:
A
Charge can not exceed `3KCV` on upper branch while on lower branch it can not exceed `6 KCV`.
`V_(1)+V_(2) = (3)/(3) +(3)/(2) = 2.5 KV`

`V_(3) +V_(4) = (6)/(7) +(6)/(3) = (20)/(7)KV rArr E = 2.5KV`
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