Which of the following statements are correct for the RC circuit shown? (Give AL
ID: 1439718 • Letter: W
Question
Which of the following statements are correct for the RC circuit shown? (Give ALL correct answers, e.g.. BCD) A. The longer S is kept in the position a. the lower is the energy stored in C. B. Right after S is moved to the position b, following a long time in the position a. the potential across C is close to. C. If S is in the position a for a long time, the current through R approaches E R. D. If S is in the position b for a long time, the charge on C approaches CE. E. After S is in the position b for a long time, the current through R becomes close to zero. F. Right after.S' is moved to the position a, following a long time in the position b. the current through R is E R. G. If 5 is in the position b for a long time, the current through R approaches R.Explanation / Answer
A)Wrong ..reason - The longer capacitor is connected to battery the more it is charged hence more energy
B) Correct- After a long time in position a will charge the capacitor fully Vc = E(1- e-t/RC ) hence just after connecting to b it will have voltage close to E
C) Wrong - After a long time in RC circuit the current becomes zero and capacitor becomes fully charges hence current in R will be zero after a long time
D) Wrong - In position b capacitor is discharging hence its voltage will become zero after a long time
E) Correct - After long time in position b all energy of capacitor disspates through resistance and ultimately current becomes zero due to lack of voltage source
F) Correct - Initially capacitor is fully discharged and have zero resistance hence current will be equal to E/R
G) Wrong- As explained in E
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