P3.27 Electromagnets and Motor Effect
|
Peer Assessed
|
Understand that a current through a wire produces a magnetic field.
Describe how a force is produced using the motor effect. Describe how to change the size and direction of this force. |
Resources
Westminster Kit |
1. Settler
|
10 minutes
|
2. Teacher shows demonstration and goes through slides.
15 minutes
|
![]()
![]()
|
3. Students complete the activity
20 minutes
4. Students peer assess their work, give WWW and EBI
5 minutes
|
![]()
Answers to Flemmings Activity
Answers Student activity AP3.27.2 Fleming’s left-hand rule Working from left to right for each row:
Initially the current is from bottom left to top right – the force is acting vertically down. A Force is reversed and so the wire moves up. B Force is increased and so the wire moves further. C Force is decreased and so the wire does not move as far. D The wire would rapidly move up and down as the force is constantly changing direction (as in a.c. the current constantly changes direction).This would make the wire buzz. |