Current Electricity and Electrical InstrumentHard
Question
Capacitor C1 of capacitance 1μF and capacitor C2 of capacitance 2μF are separately charged fully by a common battery. The two capacitors are then separately allowed to discharge through equal resistore at time t = 0.
Options
A.the current in each of the two discharging circuits is zero at t = 0
B.the current in the two discharging circuits at t = 0 are equal but not zero
C.the current in the two discharging circuits at t = 0 are unequal
D.capacitor C1, losses 50 % of its initial charge sooner then C2 loses 50% initial charge
Solution

The discharging current in the circuit is,
i = i0e- t/CR
Here, i0 = initial current =
Here, V is the potential with which capacitor was charged. Since, V and R for both the capacitors are same, inital discharge current will be same but non-zero.
∴ Correct option (b).
Further,
= CRC1 < C2
or

or C1, losses 50 % of its initial charge sooner then C1
or Correct option (d).
Create a free account to view solution
View Solution FreeTopic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
The resistance of the series combination of two resistances is S. When they are joined in parallel through total resista...In the presence of an applied electric field () in a metallic conductor....An apparatus is connected to an ideal battery as shown in figure. For what value of current, power delivered to the appa...Which of the following is scalar : -...The drift velocity of electrons in a conducting wire is of the order of 1mm/s, yet the bulb glows very quickly after the...