Capacitors Flashcards
1
Q
What is a capacitor made of?
A
A capacitor is created out of two parallel metal plates and an insulating material.
2
Q
The equation for how charge and potential difference are related for a capacitor
A
C=Q/V
3
Q
State the unit of capacitance
A
Farad(F)
4
Q
Outline how the total capacitance can be calculated when multiple capacitors are connected a)in series b)in parallel
A
a)1/(1/c1+1/c2+…+1/cn)
b)Ctotal=C1+C2+…Cn
5
Q
Describe how to determine the energy stored by a capacitor
A
W=1/2QV
6
Q
Define the time constant, RC
A
Time constant ,RC, is time taken for charge store to fall to 37% of original charge.
