Physics Unit 4 - Capacitors

HideShow resource information
How does a capacitor work?
2 parallel plates, electrons travel to 1 plate, giving it a - charge.That - charge will repel the - charge on the other plate, that charge will go to the + side of the battery, leaving a + charge on the other plate
1 of 10
What is the insulating material between the 2 parallel plates?
Dielectric
2 of 10
What is capacitance measured in?
Farads
3 of 10
What does the capacitance depend on?
Area of the plates, Separation between the plates, Nature of the insulator between them
4 of 10
How does a capacitor charge/discharge?
Exponentially
5 of 10
What does the time constant tell us?
How many seconds it takes for the capacitor to fall to 37% of its starting value
6 of 10
What factors will take longer for the capacitor to charge?
Greater resistance, larger capacitance
7 of 10
How do you add capacitors in parallel?
Ct = C1 + C2 ...
8 of 10
How do you add capacitors in series?
1/Ct = 1/C1 + 1/C2 ...
9 of 10
What is the equation linking the permivitty of free space, area and seperation?
C = EoA/d
10 of 10

Other cards in this set

Card 2

Front

What is the insulating material between the 2 parallel plates?

Back

Dielectric

Card 3

Front

What is capacitance measured in?

Back

Preview of the front of card 3

Card 4

Front

What does the capacitance depend on?

Back

Preview of the front of card 4

Card 5

Front

How does a capacitor charge/discharge?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Physics resources:

See all Physics resources »See all Capacitors resources »