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Questions and Answers
What unit is used to measure magnetic field strength?
What unit is used to measure magnetic field strength?
- Ohm
- Watt
- Hertz
- Tesla (correct)
What is the cause of the magnetic field?
What is the cause of the magnetic field?
- Changes in atmospheric pressure
- Friction between two surfaces
- Rotation of the Earth
- Flow of electric current (correct)
What is the effect of increasing the number of coils in an electromagnet?
What is the effect of increasing the number of coils in an electromagnet?
- Decreases the strength of the magnetic field
- Reverses the direction of the magnetic field
- Has no effect on the magnetic field strength
- Increases the strength of the magnetic field (correct)
