Physics for You

1
Plenary
Edexcel P1a 9c
This PowerPoint file contains the Plenary for
this topic in the Edexcel specification. Most of
these slides are paired with a corresponding
slide in the PowerPoint of the Learning
Objectives for this topic. Only a limited amount
of colour has been used on these slides, but of
course you can customise them in any way you
wish. As well as using the relevant slide to
test your students and to evaluate how well they
have understood each section of work, you may
also find the slides useful for a quick revision
course. To view a PowerPoint in Full Screen
mode, press Function key ltF5gt, or right-click
your mouse and select Full Screen. Press
ltEscapegt to go to Edit mode.
Chapter 35 Edexcel topic P1a 9c Electrical
Technology
2
Electrical Technology
Edexcel P1a 9c

• Magnets have 2 poles, called ______ and ______.
  
• We can use _____ ________ to show us the
  fields lines of force.
• The lines of force cant _______ each other.
  They come out of ______ poles and go into ______
  poles.
• TWO ways that we can ruin a magnet are to
  _______ it, or _______ it.
• Why do we use electromagnets on scrap yard
  cranes?

3
Electrical Technology
Edexcel P1a 9c
Answers

• Magnets have 2 poles, called ______ and ______
• We can use _____ ________ to show us the
  fields lines of force.
• The lines of force cant _______ each other.
  They come out of ______ poles and go into ______
  poles.
• TWO ways that we can ruin a magnet are to
  _______ it, or _______ it.
• Why do we use electromagnets on scrap yard
  cranes?

North
South.
iron filings
cross
North
South
hit
heat
So you can put things down when youve finished!
4
Electrical Technology
Edexcel P1a 9c

• The strength of an electromagnet depends upon
  _____________________ _____________________
  _____________________
• In a d.c. motor, the part with the brushes and
  the split ring is called the _______________.
• To work out which way a wire will move in a
  magnetic field, we use F_______ ____-hand rule.

5
Electrical Technology
Edexcel P1a 9c
Answers

• The strength of an electromagnet depends upon
  _____________________ _____________________
  _____________________
• In a d.c. motor, the part with the brushes and
  the split ring is called the _______________
• To work out which way a wire will move in a
  magnetic field, we use F_______ ____-hand rule

current number of turns on the coil having an
iron core.
commutator.
Flemings Left-hand rule.
6
(No Transcript)