3.E: Self-Test 3
- Page ID
- 3275
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- There are three types of magnets: natural, artificial, and electric.
- True
- False
- Natural magnets have the strongest force.
- True
- False
- If the south poles of two magnets are brought together, what they will do?
- Conduct
- Relate
- Saturate
- Repel
- Changing which of the following will also change the strength of an electromagnet?
- Direction of current flow
- Size of wires
- The length of the core
- Amount of current flow
- What is the core of an electromagnet usually made from?
- Air
- Soft iron
- Aluminum
- Copper
- What two elements must be combined with a conductor to generate a voltage?
- Magnetic field and a current
- Current and movement
- Coil and a magnet
- Magnetic field and movement
- Magnetic lines of force never cross.
- True
- False