AC And DC Supply Flashcards
1
Q
What is the frequency of alternating current in the UK?
A
50 Hz
2
Q
What is the potential difference ( V ) of alternating current in the UK?
A
230 V
3
Q
What is an alternating current?
A
AC is produced by alternating potential difference that fluctuates between positive and negative.
4
Q
What is direct current?
A
DC is a current that always flows in one direction.
5
Q
What component supplies DC?
A
Cells.
Batteries.
6
Q
What supplies AC in the UK?
A
Mains Supply.
7
Q
What device is used to observe the pattern of an electrical current?
A
Oscilloscope.
8
Q
What is the formula used to calculate the frequency of an alternating current?
A
1 / time (between peaks)
