Fill in each blank with the correct word from the lesson.

1. In 1820, Danish scientist _______ made a startling discovery: when he switched on an electric current near a compass, the needle swung sideways.
2. He had discovered that electric current creates a _______ field.
3. The magnetic _______ of current powers countless devices.
4. An electromagnet is made by coiling a wire around a soft iron core and passing _______ through it.
5. Maglev trains use powerful electromagnets for both levitation and propulsion, eliminating _______.

Choose the best option for each question.

1. Who discovered that electric current creates a magnetic field?
   a) Michael Faradayb) Hans Christian Oerstedc) James Jouled) Alessandro Volta
2. How do you increase the strength of an electromagnet?
   a) Use plastic coreb) Decrease the currentc) Add more coils of wired) Use alternating current only
3. What happens to an electromagnet when the current is switched off?
   a) It becomes permanently magnetisedb) It explodesc) It loses its magnetismd) It increases in strength

Write T for True or F for False in the brackets.

1. Hans Christian Oersted is one of the key concepts in the lesson on Magnetic Effect of Current.
2. Michael Faraday is the main topic of this lesson.
3. Add more coils of wire is one of the key concepts in the lesson on Magnetic Effect of Current.
4. Use plastic core is the main topic of this lesson.

1. In your own words, explain what Magnetic Effect of Current means.
2. List two things you learned from this lesson on Magnetic Effect of Current.