EoT2 - Review on Electromagnetism

Multiple Choice

…………………… is used to identify the direction of magnetic field around a magnet

• compass

• ammeter

• speaker

• voltmeter

Multiple Choice

Like poles have force called

• attraction

• repulsion

• no force

• constant force

Multiple Choice

Magnetic domains are

• regions that may or may not be magnetized

• regions of atoms magnetically aligned

• clusters (groups) of atoms randomly aligned

• blocks of material

Multiple Choice

A balloon has a negative charge. A glass rod has a positive charge. What will happen when the rod is brought near the balloon?

• the balloon will be attracted to the rod

• the balloon will remain in place

• the balloon will be repelled by the rod

• the balloon will spin in circles

Multiple Choice

glass, rubber, silk, and plastic are all examples of

• Conductors

• Insulator

• Thermel conductivity

• Materials

Multiple Choice

A metal spoon is an example of _____.

• a conductor
• an insulator

Multiple Choice

Two electrically neutral metal spheres, A and B, on insulating stands are placed in contact with each other. A negatively charged rod is brought near, but does not touch the spheres, as shown in the diagram below. How are the spheres now charged?

• A is positive and B is positive.
• A is negative and B is positive.
• A is positive and B is negative.
• A is negative and B is negative.

Multiple Choice

What is the relationship between electric potential energy and the distance between charges?

• It is directly proportional to the distance

• It is inversely proportional to the distance

• It remains constant with distance

• It becomes zero as distance increases

Multiple Choice

What unit of measurement do we use to measure electrical potential energy in a battery?

• Watts

• Volts

• Amps

• Ohms

Multiple Choice

An object through which electrons can easily flow is called a(n) ___________.

• Conductor
• Insulator

Multiple Choice

Voltage is...

• the power

• the flow of electrical charge

• the amount of energy gained or lost across two points

• what opposes the flow of current

Multiple Choice

The picture shows a(n) ________________ circuit.

Multiple Choice

Which electromagnet is stronger?

• A

• B

Multiple Choice

Which electromagnet will pick up LESS paper clips?

• A

• B

Multiple Choice

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

• Add more coils of wire to the nail.
• Use a smaller battery.
• Reverse the poles of the magnet.
• Remove all the coils and the nail.

Multiple Choice

Which of these bests describes an electromagnet?

• A permanent magnet made from electric currents.

• A temporary magnet made from electric currents.

• A temporary magnet made from magnetic currents.