Capacitors and Capacitance

What is capacitance?

• Capacitance is the ability of a system to store an electric charge.

• Capacitance is the ability of a system to generate heat.

• Capacitance is the ability of a system to conduct electricity.

• Capacitance is the ability of a system to produce light.

What is the SI unit of capacitance?

• newton

• farad

• ohm

• joule

How is capacitance defined mathematically?

• Q = 1/2 CV^2

• Q = IR

• Q = I^2R

• Q = CV

What factors affect the capacitance of a capacitor?

• The area of the plates, the distance between the plates, material between the plates

• Color of the plates, thickness of the wires, temperature of the surroundings

How does the area of the plates affect the capacitance of a capacitor?

• The capacitance of a capacitor is inversely proportional to the area of the plates.

• The capacitance of a capacitor increases with the area of the plates increases.

• The area of the plates has no effect on the capacitance of a capacitor increases.

• The capacitance of a capacitor decreases with the area of the plates.

How does the distance between the plates affect the capacitance of a capacitor?

• The capacitance increases as the distance between the plates decreases.

• The capacitance remains constant regardless of the distance between the plates.

• The capacitance decreases as the distance between the plates decreases.

• The capacitance is not affected by the distance between the plates.

Which is the symbol for a capacitor

• A

• B

• C

• None of the choices