Capacitors and Unit of Capacitance

Q. Capacitance of Earth is very large compared to 1 farad.

1. False
2. True

Q. Capacitance does not depend on the shape of the conductor.

1. False
2. True

Q. Why do we need capacitor to store energy when we already have battery to do that?

1. Because capacitor can store a very-very large amount of energy
2. Because a capacitor can provide the stored energy back relatively slowly
3. Because a capacitor can provide the stored energy back relatively quickly.
4. Because batteries are obsolete

Q. Which is the primary use of a capacitor?

1. A capacitor is used to capacitate
2. A capacitor is used to store energy
3. A capacitor is used to convert chemical energy to electrical energy
4. It has no practical use, it’s only to make the electrical circuits look more complicated.

Q. The more capacitance a capacitor has, the less charge it can store.

1. False
2. True