Solenoids & electromagnets
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Intros
Examples
Lessons
- Consider the 800-turn solenoid shown in the diagram below.
What is the current in the windings that would produce a magnetic field of 0.060T at the center of the solenoid?- 3.0A
- 8.0 A
- 18 A
- 290 A
- Identify the magnetic field poles 1 and 2 of the current-carrying solenoid in the diagram below.
- Which of the four arrows indicates the direction of the magnetic field when current flows in the solenoid shown below?
- W
- X
- Y
- Z
- A coil of copper wire is wrapped around a compass as shown. Which way will the compass needle point when current flows through the coil?
- W
- X
- Y
- Z
- A current of 4.3 A flows through a solenoid. The 620-turn solenoid is 14 cm long and has a 3.5 cm diameter.
What are the direction and magnitude of the magnetic field inside the solenoid?