ELECTROMAGNETISM

1.     What are some of the factors that affect the strength of an electromagnet?

• a) Number of coils of wire, size and number of battery cell use, and size of the core material.

•  b) Voltage, resistance, and inductance.

• c) Frequency, wavelength, and amplitude

2.   What is the purpose of winding copper wire around an iron nail in an electromagnet?

• a) To create a circuit.

• b) To generate electricity.

• c) To create a magnetic field.

3. How can you increase the strength of an electromagnet?

• Increase the number of turns of wire.

• Increase the current.

• Use a more magnetic core material.

• All of the above.

4.  What is the best way to measure the strength of an electromagnet?

• By measuring the voltage.

• By counting the number of turns of wire.

• By measuring the current.

• By counting the number of paper clips or other small magnetic objects it can pick up.

5.   What can the results of this experiment be used for?

• To optimize the design and performance of electromagnets.

• To create a new type of circuit.

• To generate electricity from magnetism.