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FROM SOUTH TO NORTH

Compare current induction using a south vs. a north pole of a magnet

Suitable For

Grade 5

Difficulty

1

Time Required

 <24 Hours

Supervision

Advised

What’s it about?

Magnetism has a lot in common with electricity. Both have polarity – magnets have a north and a south pole which repel each other, and similar poles attract each other. Electricity has positive and negative polarity which works similar to the attraction and repulsion of magnetism.

Electrical current can only flow when there is a difference in electrical potential, not when they are alike. Observe what happens when electrical current is induced with the south and the north pole of a magnet respectively in this science experiment:

Topics covered

Milliammeter, Induction, Michael Faraday

What will I need?

  • INSULATED COPPER WIRE
  • BAR MAGNET
  • LARGE BOLT
  • MILLIAMMETER
  • WIRE CUTTERS

Procedure (Method)

Unfortunately, this section is only available in the e-book version of the project.

How does it work?

Unfortunately, this section is only available in the e-book version of the project.

In this science experiment the milliameter needle moves in the direction of current flow each time a pole of the magnet is moved along the coil to indicate the flow of electricity by means of ‘induction’. When the magnet is removed, the current stops. The direction of an induced current will always oppose the change that is causing it.

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