After a very long time, the potential difference across which of the following i
ID: 1598287 • Letter: A
Question
After a very long time, the potential difference across which of the following is equal to the emf of the battery? (a) C, (b) R, () neither C nor R Consider the circuit consisted a resistor and a capacitor in series, and assume that the battery has no internal of difference. Just after the switch is closed, the potential difference across which of the following is equal to the emf of the battery? (a) C, (b) R, (c) neither C nor R Given a resistance of 5 M Ohm, what capacitance value is required to have a time constant of 2 s?Explanation / Answer
22) After a very long time the potential difference across capacitor C is equal to the emf of the battery.
when battery is connected to the capacitor initially there is no voltage across capacitor after some time positive plate acquires positive charge and negitive plate acquires negative plate. finally at certain time emf of battery is equal to capacitro voltage
23) Just after the switch is closed, the potential difference across Resistance R is equal to the emf of the battery.because capacitor takes a time to get battery emf while resistance won't take
24) time constant = RC
2 = 5*106 * C
C= 4*10-7 farads = 0.4 microfarads
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.