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Exchanging poles
YOU WILL NEED
→ setup from Experiment 28
HERE'S HOW
1. Repeat the last experiment. Pay
attention to which end of the compass
needle points to the coil.
2. Then place the compass at the other
end of the coil, and briefly switch on
the current.
Which end of the compass needle points
to the coil now?
3. Repeat this experiment, but first reverse
the battery terminals so the current
flows the opposite direction through
the wire.
What are the positions of the needle
this time?
Electromagnetism |
EXPERIMENT 29
1
2
3
41
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