H Electricity Flashcards
1
Q
Definition of AC
A
Current that changes direction and instantaneous value with time
2
Q
Which is higher Peak Voltage or rms Voltage
A
Peak Vpeak =root2 x vrms (rms is like the working voltage of an AC supply)
3
Q
State what is meant by an EMF of 6V
A
Maximum Energy of 6J supplied to each coulomb of charge, in an open circuit
4
Q
Short Circuit current
A
I=EMF/internal resistance
5
Q
Lost volts
A
Energy per coulomb of charge lost across the cell due to internal resistance
