need a new flux capacitor

Question 1

what is a capacitor?

Answer 1

an electronic device that stores energy to be released when needed?

Question 2

how does capacitor store energy?

Answer 2

• a capacitor stores energy within the electric field between a pair of conductors. the process of storing energy is known as charging, it involves electric charges of equal sizes but opposite charge building up on each plate

Question 3

what is capacitance?

Answer 3

-the charge stored per unit potential difference

Question 4

explain parallel plate capacitor?

Answer 4

• a parallel plate capacitor is made up of two conductive metal plates connected to a voltage supply.
• the negative terminal of the voltage supply pushes electrons onto one plate, making it negatively charged.
• the electrons are repelled from the opposite plate, making it positively charged.
• an electric field is created between the plates, to ensure charge does not freely flow between the plates.

Question 5

a capacitor is connected to a battery using copper wires. explain why the capacitor can be fully charged after a very short time?

Answer 5

-the time constant of the circuit is very small because of the small resistance of the copper wires. therefore the capacitor charges up in a very short time.

Question 6

state two practical uses of capacitors?

Answer 6

• flash for cameras

- smoothing capacitors

Question 7

what happens when capacitor is charging?

Answer 7

-when the switch is closed there is max current in the circuit and the capacitor starts to charge up. The potential difference across the capacitor starts to increase from zero as it gather charge. After a long time depending on the time constant of the circuit, the capacitor will be fully charged, the current in the circuit will go to 0 since electrons stop flowing through the circuit.