Current Electricity Charging Discharging Of Capacitors Question 138
Question: When the key K is pressed at time $ t=0 $ , which of the following statements about the current I in the resistor AB of the given circuit is true
[CBSE PMT 1995]
Options:
A) I = 2 mA at all t
B) I oscillates between 1 mA and 2mA
C) I = 1 mA at all t
D) At t = 0 , I = 2 mA and with time it goes to 1 mA
Show Answer
Answer:
Correct Answer: D
Solution:
At time t = 0 i.e. when capacitor is charging, current $ i=\frac{2}{1000}=2mA $ When capacitor is full charged, no current will pass through it, hence current through the circuit $ i=\frac{2}{2000}=1mA $
BETA
