Quiz on Electromagnetism and Magnetism

What is electromagnetism defined as?

• The electricity that produces magnetism

• The attraction between charged particles

• The force between two magnets

• The magnetism that produces electricity

Who first discovered the connection between electricity and magnetism?

• Newton and Galileo

• Faraday and Maxwell

• Coulomb and Ampere

• Einstein and Tesla

What shape does the magnetic field take around a straight current-carrying wire?

• Square

• Elliptical

• Triangular

• Cylindrical

Which rule is used to determine the direction of the magnetic field around a current-carrying wire?

• Left-Hand Rule

• Right-Hand Grip Rule

• Maxwell's Law

• Fleming's Right-Hand Rule

What happens to the direction of the magnetic field when the current direction is reversed?

• It doubles in strength

• It reverses direction

• It disappears

• It remains unchanged

What is a solenoid?

• A type of magnet

• A type of electric circuit

• A long, helically wound coil of insulated wire

• A device to measure electric current

How can the strength of the magnetic field in a solenoid be increased?

• By decreasing the number of turns

• By increasing the current

• By using a thicker wire

• By increasing the radius

What is an electromagnet?

• A device that generates electricity

• A type of electric motor

• A solenoid with a soft iron core

• A permanent magnet

What is the primary use of soft iron in electromagnets?

• To conduct electricity

• To increase resistance

• To easily magnetize and demagnetize

• To retain magnetism

What does Fleming's Left-Hand Rule help determine?

• The direction of current

• The direction of force on a conductor

• The strength of the magnetic field

• The direction of the magnetic field