6.1 - Capacitors Flashcards Preview

OCR Physics A Level > 6.1 - Capacitors > Flashcards

Flashcards in 6.1 - Capacitors Deck (8):
1

What is a Capacitor?

A circuit component that stores energy by separating charges into two electrical conductors with an insulator between them.

2

What is Capacitance?

The quantity of charge which can be stored per unit potential difference across the plates of the capacitor

3

What is the unit of Capacitance?

Farad (F)

4

What is one Farad equal to?

One Coulomb per volt

5

What is the equation for Capacitance?

Q/V

6

What is Exponential Decay?

When the quantity decreases at a rate that is proportional to the magnitude of the quantity at that time

7

What is the Time Constant?

The time taken for the charge remaining on a capacitor to decrease to 1/e (about 37%) of its initial value

8

What is the equation for the Time Constant?

T=CR