Capacitors

Question 1

Define Capacitance

Answer 1

The charge stored per unit of potential difference stored across it.

Question 2

Define the farad

Answer 2

Coulomb per volt

Question 3

Define the time constant of a circuit

Answer 3

The time constant is the time taken for current, charge or p.d. to fall 1/e (37%) of its initial value. =Capacitance * Resisitance