Quiz on Magnetism and Electro-Magnetism

What do lines of flux represent in magnetism?

• Visible lines of force

• Unseen lines that form closed loops

• Open-ended lines of energy

• Lines of gravitational pull

What happens when two like poles of magnets are brought close to each other?

• They attract each other.

• They repel each other.

• They neutralize each other.

• They have no effect on each other.

What is the convention regarding lines of flux?

• Lines of flux can cross each other.

• Lines of flux are always straight.

• Lines of flux cannot cross.

• Lines of flux are visible.

What is the main topic of Unit 202 Handout 9?

• Chemical reactions

• Electro-magnetism

• Thermal dynamics

• Gravitational forces

What is produced when an electrical current flows through a conductor?

• A gravitational field

• A magnetic field

• A sound wave

• A light beam

What is the direction of the magnetic field produced by a current?

• Linear along the conductor

• Circular around the conductor

• Randomly oriented

• Vertical to the conductor

What happens when conductors are wound into a coil or solenoid?

• The magnetic effect decreases.

• The magnetic field becomes weaker.

• The magnetic effect increases and produces a field similar to a bar magnet.

• The conductors lose their magnetic properties.

What is a contactor?

• A type of resistor.

• A type of relay that can handle high power.

• A type of capacitor.

• A type of battery.

What does a solenoid produce when an electric current is passed through it?

• Heat.

• Light.

• A magnetic field.

• Sound.

What is the term used for a coil designed to produce a uniform magnetic field in a volume of space?

• Resistor.

• Capacitor.

• Solenoid.

• Battery.