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- 1. Multiple Choice
1. An electromagnet can be made stronger by using _________.
A. only one cell or battery
B. more cells or batteries
C. more pins
D. electricity
- 2. Multiple Choice
2. When you use 2 or more batteries, then there is a/an ________ in its current.
A. magnetic field
B. no change
C. increase
D. decrease
- 3. Multiple Choice
3. This is a temporary magnet that may be produced by making
electricity flow through a wire coiled around an iron nail.
A. electromagnet
B. magnetism
C. electricity
D. dry cells
- 4. Multiple Choice
4. Nails can be turned into magnet by_____________.
A. coiling a wire around it and letting the electricity flow into it
B. coiling a wire around the dry cells or batteries.
C. coiling dry cells or batteries in the wire
D. letting the electricity pass through it
- 5. Multiple Choice
5. How can you increase the strength of an electromagnet?
A. by letting the electricity pass through it
B. by adding more dry cells or batteries
C. by adding the more magnets
D. by adding longer wires
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