A 500μF capacitor is charged at a steady rate of 100μC/sec. The potential difference across the capacitor will be 10V after an interval of-
5sec
20sec
25sec
50sec
A
5sec
B
25sec
C
50sec
D
20sec
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Solution
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Given,
Capacitance, C=500μF
Potential difference, V=10V
Rate of charging, q=100μC/sec
=100×10−6C/sec
To fine, t=?
We know that,
Q=qt
t=Qq=5×10−3C100×10−6C×sec=50sec
∴ It will take 50sec to raise the potential difference .
Hence,
Option D is correct.
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