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As shown in figure, if the point C is ea...

As shown in figure, if the point C is earthed and the point A is given a potential of 2000 V, then the potential at point B will be :

A

400V

B

500V

C

1000V

D

1300V

Text Solution

Verified by Experts

The correct Answer is:
B
`C_(BC)=(10xx10)/(10+10)+10=15muF, C_(AC)=(5xx15)/(5+15)=(75)/(20)muF`.
Charge on capacitor of `5muF=(75)/(20)xx2000=7500muC`
`V_(A)-V_(B)=(7500muC)/(5muF)=1500` volt, `V_(A)=2000`volt, `V_(B)=2000-1500=500` volt.
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