AC and DC Flashcards
1
Q
direct current is obtained from what?
A
a circuit containing a battery
2
Q
what is direct current?
A
a steady, constantly flowing current that flows in the same direction in a circuit from positive to negative
3
Q
a DC power supply has what type of terminals?
A
fixed positive and negative terminals
4
Q
AC is obtained from what?
A
a generator- a coil rotating in a magnetic field
5
Q
what is AC defined as?
A
a current that continuously changes its direction going back and forth around a circuit
6
Q
what does AC power supply have with terminals?
A
2 identical terminals that switch between positive and negative
7
Q
AC comes from what electricity supply?
A
the mains
