Capacitance Flashcards
1
Q
Definition
Capacitance
A
Charge on the plate per unit potential difference across the plate
2
Q
Formula
Work done by a charging a capacitor equals
A
1/2 * Charge * Potential difference
3
Q
Definition
Time constant
A
Time taken for the current in the circuit to fall to 1/e of the initial current
4
Q
Formula
Time constant equals
A
Resistance * Capacitance
5
Q
Formula
Exponential decay of charge equals
A
X * exp(-time constant / resistance * charge)
6
Q
Formula
Capacitance of isolated bodies
A
4pi * const * distance
