Electricity Flashcards
1
Q
Formula linking voltage, current and resistance.
A
V=IR
2
Q
Formula current, charge and time
A
Q=It
3
Q
Rules for voltage in series and parallel
A
In series: Vs = V1 + V2 + V3…
In parallel: Vs = V1 = V2 = V3…
4
Q
Rules for current in series and parallel
A
In series: Is = I1 = I2 = I3…
In parallel: Is = I1 + I2 + I3…
5
Q
Rules for resistance in series and parallel
A
In series: Rt = R1 + R2 + R3…
In parallel: 1/Rt = 1/R1 + 1/R2 + 1/R3…
6
Q
How does D.C current flow in a circuit
A
In one direction
7
Q
How does A.C current flow in a circuit
A
In both directions
