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Standard XII
Physics
Maxwell's Equations
Voltage acros...
Question
Voltage across 10 microfarad capacitor is changing at the rate of 10 V/s. The rate at which energy stored in capacitor is increasing when voltage across it is 20 V is?
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The amount of charge stored in a capacitor is directly proportional to the voltage applied across the capacitor.
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In the given circuit, peak voltage across the resistor and capacitor are 6V and 8V. At an instant when voltage across capacitor is 4V in magnitude,
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A
1.00
m
H
inductor and one
1.00
μ
F
capacitor are connected in series.The current in the circuit is described by
I
=
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t
where t is in seconds and I is in amperes. Initially, the capacitor has no charge. Determine
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c.The time when the energy stored in the capacitor first exceeds that in the inductor.
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A capacitor of unknown capacitance is connected across a battery of V volts . The charge stored in it is
360
μ
C
. When potential across the capacitor is reduced by 120 V, the charge stored in it becomes
120
μ
C
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(i) The potential V and the unknown capacitance C.
(ii) What will be the charge stored in the capacitor, if the voltage applied had increased by 120 V?
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