motor generatirs trandpsfroersm

Question 1

how does an electric motor work

Answer 1

an electric motor has a force induced on one side causing it to go upwards and a force induced on the other side causing it to move downwards .

Question 2

how does a conductor form potential difference

Answer 2

electrons within it move from one side to the opposite

Question 3

what will happen if a conductor is connected to a circuit

Answer 3

a current will flow, and this current will produce a magnetic field. the direction of the new field will be the opposite as the first field

Question 4

how do electric generators work

Answer 4

• a turbine spins thr coil of wire
• this movement of wire causes the magnetic field to be cut
• this generates pd
  if the coil is connected to a circuit, an alternating current will flow

Question 5

what is an alternating current

Answer 5

current that is constantly changing in direction, so it’s magnetic field also constantly chnages

Question 6

what does an alternating current create in a coil

Answer 6

a changing magnetic field

Question 7

how do transformers work

Answer 7

• an alternating current in the first coil creates a changing magnetic field
• this magnetic field cuts through the secondary coil
• a current is then induced in the secondary coil which is also alternating

Question 8

what would happen if there were more turns on the secondary coil

Answer 8

a step UP transformer is produced.
voltage is INCREASED induced a LARGER pd, less current tho

Question 9

what would happen if there were less turns on the secondary coil

Question 10

what goes with dc

Answer 10

split ring

Question 11

what goes with ac

Answer 11

slip ring

Question 12

compare an alternator with a dynamo

Answer 12

• dynamo is a dc generator, alternator is an ac generator
• an alternator has alternating pd, dynamo doesn’t
• alternator uses slip ring, dynamo uses split ring