ELECTROMAGNETISM Quiz no, 1 4th Q

What is the basic unit of electric field?

• Tesla

• Newton/Coulomb   

• Volt

• Weber

What does the right-hand rule help determine?

• The direction of electric current. 

• 1. The magnitude of magnetic flux.

• 1. The potential difference in a circuit.

• 1. The direction of the magnetic field around a current-carrying wire.

Which material is most commonly used to make permanent magnets?

• Copper

• Aluminum

• Iron

• Silver

Magnetic flux is measured in which unit?

• Tesla

• Farad

• Volt    

• Weber

What happens to a magnetic material when it is placed in a magnetic field?

• 1. It becomes electrically charged.

• 1. It becomes polarized.

• 1. It experiences a force.

• 1. It heats up.

Which of the following is NOT a property of a magnet?    

• 1. It has a north and south pole.

• 1. Opposite poles attract each other.

• 1. Like poles repel each other.

• 1. It can attract all metals.

What is the effect of cutting a bar magnet into two pieces?

• 1. Each piece will have only one pole.

• 1. Both pieces will lose their magnetism.

• 1. One piece will be a magnet, and the other will not.

• 1. Each piece will become a smaller bar magnet with both poles.

What happens to a ferromagnetic material's domains when it is magnetized?

• 1. They shrink in size.

• 1. They become randomly aligned.

• 1. They align with the magnetic field.

• 1. They lose their magnetic properties.

What is the phenomenon where a material temporarily becomes magnetized when placed in a magnetic field?

• Electromagnetism

• Induced magnetism

• 1. Permanent magnetism

• Temporary magnetism

How do magnetic field lines around a straight current-carrying wire appear?

• Circular

• Parallel

• Straight line

• 1. Parabolic