Choose the correct options for the following questions.
Energy required to charge a capacitor of \rm{5 \,\mu F} by connecting DC source of 20 kV is
Difficulty: Easy
A:
$\rm{1\, kJ}$
B:
$\rm{2\, kJ}$
C:
$ \rm{5\, kJ}$
D:
$ \rm{10\, kJ}$
Capacitors store
Difficulty: Easy
A:
Equal charges
B:
Unequal charges
C:
Equal and opposite charges
D:
Unequal and opposite charges
If a $ \rm{2 \,\mu F}$ capacitor is connected, by closing a switch, to a supply of 100 volts through a $1\times10^{6}$ ohm series resistance. What will be the time constant?
Difficulty: Easy
A:
2 seconds
B:
3 seconds
C:
4 seconds
D:
7 seconds
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