Page 29 - 383_
P. 29
bottom diagram and mark in the poles.
N S
Step 5
Why is Oersted’s experiment described as the first step towards
the invention of the generator or dynamo?
Step 6
Here are the instructions for a simple experiment with a magnet.
You have just done this experiment.
Now write the report. Start like this: The aim of the
experiment was to show why the like poles of a magnet repel and
the unlike poles attract. We took...Continue.
Why do the like poles repel?
Take a sheet of cardboard, a magnet, a handful of iron filings
and a compass. Put the magnet under the sheet of cardboard and
scatter the iron filings on the top of the card.
Tap the edge of the card lightly. The iron filings will make a
pattern. They will form a series of loops between the two poles of
the magnet. Place the compass on one side of the magnet and then
on the other. You will see that the compass needle follows the
loops. This shows that there are lines of force, which leave the
magnet at one pole and enter it again at the other pole.
Step 7
Reporting writing
a) Look at your answers to Step 2. The true statements and
your corrected statements make a summary of the Oersted’s
27