Electrostatics Question 282
Question: The plates of a capacitor are charged to a potential difference of 320 volts and are then connected across a resistor. The potential difference across the capacitor decays exponentially with time. After 1 second the potential difference between the plates of the capacitor is 240 volts, then after 2 and 3 seconds the potential difference between the plates will be [MP PET 1996]
Options:
A) With
B) With
C) With
D) With
Show Answer
Answer:
Correct Answer: D
Solution:
Charges on capacitors are
and
The situation is situation is similar as the two capacitors in series are first charged with a battery of emf 50 V and then disconnected \ when
is closed
