1. A 2 µF capacitor is connected by closing switch to supply 100V through a 1M ohms series resistance. Calculate (a). Time constant (b) voltage across the capacitor 6 seconds after the switch has been closed.

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1. A 2 µF capacitor is connected by closing switch to supply 100V through a 1M ohms series
resistance. Calculate (a). Time constant (b) voltage across the capacitor 6 seconds after the
switch has been closed.
2. A 4µF capacitor, a 6µF capacitor and 8µF capacitor are connected in parallel across a 300V
source. Find (a) total capacitance (b) magnitude of charge stored by each capacitor and (c) total
stored energy.
3. A series RC circuit is to have an initial charging current of 4 mA and a time constant of 3.6
seconds when connected to 120V d.c. supply. Calculate the values of R and C. What will be
the energy stored in the capacitor?
4. With 50 V applied across 2 capacitors in series, one of them, 1 µF and the other 2 µF, how
much is voltage across each capacitor?
5. Two capacitors, 2 µF and 4 µF are connected in parallel. If a supply voltage of 50V is applied
to the parallel connection, calculate the charge in each capacitor and hence the total charge.
Also, calculate the total capacitance, Cr.
Transcribed Image Text:1. A 2 µF capacitor is connected by closing switch to supply 100V through a 1M ohms series resistance. Calculate (a). Time constant (b) voltage across the capacitor 6 seconds after the switch has been closed. 2. A 4µF capacitor, a 6µF capacitor and 8µF capacitor are connected in parallel across a 300V source. Find (a) total capacitance (b) magnitude of charge stored by each capacitor and (c) total stored energy. 3. A series RC circuit is to have an initial charging current of 4 mA and a time constant of 3.6 seconds when connected to 120V d.c. supply. Calculate the values of R and C. What will be the energy stored in the capacitor? 4. With 50 V applied across 2 capacitors in series, one of them, 1 µF and the other 2 µF, how much is voltage across each capacitor? 5. Two capacitors, 2 µF and 4 µF are connected in parallel. If a supply voltage of 50V is applied to the parallel connection, calculate the charge in each capacitor and hence the total charge. Also, calculate the total capacitance, Cr.
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