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Oak National Academy
12 questions
An object that always behaves as a magnet is called a __________ magnet.
Which of the following objects would be attracted to an electromagnet?
Which of the following statements explain why soft iron is usually used for the core of an electromagnet?
Which of the following is a definition of a complete circuit?
A pupil has a coil of wire coated in yellow plastic, as shown. They attach metal clips to the ends of the coil and connect them to a suitable battery. Why is there no magnetic field around the coil?
A pupil experiments with a bar magnet and an electromagnet. Which of the following statements are correct?
An electromagnet that loses its magnetism when current stops flowing can also be called a __________ magnet.
A scrapyard uses an electromagnet to move objects made of a magnetic material such as steel. Which of the following describe an advantage of using an electromagnet compared with a permanent magnet?
Which of the following is the purpose of the springs attached to the bolt of the electromagnetic door lock shown?
The diagram shows an electric door lock. Which of the following statements are correct?
The diagram shows an electric bell. Which of the following happen as the switch is pressed?
Which of the following statements describes the function of an electric motor?
