capacitance & current Flashcards
1
Q
what’s equation for capacitance?
A
C=Q/V
2
Q
what’s the unit for capacitance?
A
Farad
3
Q
what are capacitors usually used for?
A
short term energy source for devices
4
Q
what is the equation for energy stored in a capacitor?
A
U = QV/2 = Q^2/2C = 1/2CV
5
Q
what is current?
A
current is the movement of charge
6
Q
what is electric current?
A
The electric current is defined as the amount of charge per unit time that is
crossing some area.
