Question

What is the difference between a capacitor and a battery?

	A.	Capacitors inherently store more charge.
	B.	Capacitors charge and discharge quickly while batteries release charge over a longer period of time.
	C.	There is no difference. Capacitors and batteries are the same thing.
	D.	Capacitors release charge over a longer period of time while batteries charge and discharge quickly.

The total current in to a junction should be equal to:

	A.	none of the current out of the junction.
	B.	the total current out of a junction.
	C.	some of the current out of the junction.
	D.	the negative of the total current out of the junction.

How do capacitors in series combine?

	A.	1/ceq = 1/c1 + 1/c2 + ... 1/cn
	B.	1/ceq = c1 + c2 + ... + cn
	C.	ceq = c1 + c2 + ... +cn
	D.	ceq = 1/c1 + 1/c2 + ... + 1/cn

Answer 1

There is a measure difference between battery and capacitor that is capacitors have more rapid charge and discharge capability than batteries.so obtion B is correct means caoacitor charge and discharge quickly while battery realease chargr over a long time of period.

The total current in to a junction should be equal to total current out to be a junction.this junctuon law . Means total current at a junction should be zero.so obtion B is correct.

Capacitors in series combine like resistances in parallel. So

1/Ceq = 1/C1 + 1/C2 + .. 1/Cn

Obtion A is correct.