Elec 2: Energy & Power In Circuits Flashcards
1
Q
What is the equation linking energy, charge, and voltage
A
E = QV
2
Q
What is the equation linking W = QV & Q = It
A
W = ItV
3
Q
What is the definition of power
A
Work done/energy transferred per second (Js^-1) P = W/t
4
Q
What two equations are derived from P = IV and Ohm’s Law
A
P = I^2 * R
P = V^2 / R
5
Q
What is a bulb rating
A
The normal operation voltage and power a build should use
6
Q
What is a kWh, how many joules of energy is it?
A
The measure of domestic electrical energy
1 kWh = 3.6 *10^6 J
