Electromagnets
Cards (21)
- What should you be able to describe by the end of the video?
- What effect does a current flowing through a wire have?
- What happens to a compass when current flows through a wire?
- How does the strength of the magnetic field relate to the size of the current?
- What happens to the magnetic field strength as you move away from the wire?
- What occurs if the direction of the current is changed?
- What rule is used to determine the direction of the magnetic field produced by a wire?
- How do you apply the right hand grip rule?
- What shape does coiling the wire create?
- What type of magnetic field does a solenoid produce?
- How does the magnetic field around a solenoid compare to that of a bar magnet?
- How do you determine the direction of the magnetic field in a solenoid?
- What are the three ways to increase the strength of a solenoid's magnetic field?
- What happens to the magnetic field strength if the number of turns of the coil is increased?
- What is an iron core in a solenoid called?
- Why are electromagnets useful?
- Where can you find more questions on electromagnets?
- What is conventional current?
- How is a compass used to demonstrate the magnetic field around a wire?
- How does the right hand grip rule help in understanding magnetic fields?
- What is the significance of an electromagnet in practical applications?