Electromagnetism Fundamentals
A Grade 9 science worksheet covering the basics of electromagnetism, including magnetic fields, electromagnets, and the right-hand rule.
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Electromagnetism Fundamentals
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Read each question carefully and answer to the best of your ability. Show all work for calculations.
1. Which of the following best describes an electromagnet?
A permanent magnet made from iron.
A magnet whose magnetic field is produced by an electric current.
A material that is always magnetic, even without an external field.
A device that converts magnetic energy into electrical energy.
2. The strength of an electromagnet can be increased by all of the following EXCEPT:
Increasing the number of turns in the coil.
Decreasing the current flowing through the coil.
Inserting an iron core into the coil.
Increasing the current flowing through the coil.
3. The area around a magnet where its magnetic force is exerted is called a .
4. The direction of the magnetic field lines around a current-carrying wire can be determined using the .
5. An electromagnet is a temporary magnet because its magnetism can be turned on and off by controlling the .
6. Draw the magnetic field lines around the bar magnet shown below. Indicate the direction of the field lines.
7. Explain how the Right-Hand Rule is used to determine the direction of the magnetic field around a straight current-carrying wire.
8. Increasing the voltage across a wire will decrease the strength of the magnetic field it produces.
True
False
9. Magnetic field lines never cross each other.
True
False
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