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1. Aljean wants to construct his own electromagnet. What are the materials he is going to use? A. Battery, nail and magnet B. Battery, wire and nail C. Magnet, nail and wire D. Paper clips, pins and magnet
2. If you will connect the North pole of one magnet to the South Pole of another magnet, the two poles will_____ A. repel B. attract C. explode D. contract
3. How are electromagnet different from other magnets? A. Electromagnet is a permanent magnet B. Electromagnet can be turned on and off C. Electromagnet is bigger than any other magnets D. Electromagnet is bigger than any other magnets
4. In an electromagnet, what do you call the region around the wire where the force of magnetism felt? A. Core B. Solenoid C. Plunger D. Magnetic field
5. How can you increase the strength of an electromagnet? A. By adding longer wires B. By adding more magnets C. By adding more dry cells or batteries D. By letting the electricity flows through it
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