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2 cards from this section. Quick, good the night before a test.
What is the relationship between electric current and magnetism?
Think about compass deflections.
What do we see when we sprinkle iron filings around a magnet?
Consider how magnetic forces work.
What does a deflected compass needle indicate?
Recall the experiment with the compass.
True or False: A current-carrying wire can create a magnetic field.
Remember the experiments.
A long straight wire carries a current southward. Determine the direction of the magnetic field at a point east of the wire.
Use the right-hand thumb rule.
If a solenoid has 100 turns and carries 2 Amps of current, calculate the field strength at the center if the earlier single turn had a magnetic strength of 0.1 T.
Consider how field strength accumulates with turns.
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