household electricity (16)

Question 1

define alternating current

Answer 1

current that repeatedly changes direction, used in mains electricity

Question 2

whats the mains voltage of uk

Answer 2

230 volts

Question 3

whats the ,mains frequency

Answer 3

50 hertz

Question 4

whats direct current

Answer 4

current that flows in only 1 direction, used in cells and batteries

Question 5

how do you calculate frequency of an ac supply

Answer 5

1/time taken for 1 cycle

Question 6

whatre the 3 wires in a mains circuit

Answer 6

1- live wire(connected to mains)
2- neutral wire
3-earth wire