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In the circuit shown, find the amount of...

In the circuit shown, find the amount of charge that will flow through the key when it is closed.

A

`20muC`

B

`40muC`

C

`80muC`

D

`120muC`

Text Solution

Verified by Experts

The correct Answer is:
C
Before
`C_(eq) =(18)/(5) muF`
`q=(18)/(5) muF`
`q=(18)/(5) xx 10=36 muC`

After
`C_(eq) =10`
`q. =100 muC`
Charge flown through key
`= Delta q` in the shaded box.
`=80 mu C`
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