What happens to the flow of electric current in an open circuit?

The electric current cannot flow.

The electric current continues to flow.

The electric current jumps to another object.

If you cut a magnet in half, what happens to the poles?

Both halves get a North pole and a South Pole

One half gets the North Pole, the other half gets the South Pole

Both halves get only a North Pole

Both halves get only a South Pole

An electromagnet's poles may be reversed by:

changing the direction of current flow

decreasing the voltage of the coil

altering the material used to make the coils

If a glass plate is placed over a magnet and iron filings are sprinkled over the glass, a pattern will be visible. What does this pattern indicate?

The chemical reaction of the magnet and the filings

What is most likely to happen when the switch is closed?

A magnetic field should be produced

How do electromagnets differ from regular magnets?

A. They can be turned off and on

B. Their polarity can be reversed

C. Their strength can be changed

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

Add more coils of wire to the nail.

Reverse the poles of the magnet.

Remove all the coils and the nail.

What are the components of the electromagnets?

battery, copper wire and iron nail

battery , copper wire and plastic bottle

What would happen if you took one end of the wire off the battery?

The nail would no longer be a magnet

How can the strength of an electromagnet be increased? (mark all that apply)

increase the current flowing through the coil

How can the strength of an electromagnet increase?

Add more loops (coils) of wire around the iron nail

Remove loops (coils) of wire from around the iron nail

Remove the iron nail, leaving only the coils of wire

What is magnetic force?

Attraction or repulsion that arises between electrically charged particles because of their motion

Force resulting from interaction between electrically charged particles

The size or quantity of something

Students attached both ends of a long wire to the poles of a battery and wrapped the wire around a spoon. In this arrangement, the spoon is able to pick up five paper clips. The students wrap more wire around the spoon and want to determine if the strength of the magnetic force has increased. Which of the following observations would indicate that wrapping more wire has increased the strength of the electromagnet?

The spoon now picks up seven paper clips.

More wire was needed to wrap around the spoon.

Eventually, the battery runs out of energy.

The ends of the wire must touch the battery's poles.

Students want to investigate how the amount of electric energy delivered to a motor affects its speed. Which of the following procedures will most likely produce the data students need to answer their question?

Measure the rotations per second of a motor when it is connected to one battery, two batteries, and three batteries.

Add larger and larger motors to a battery to determine the size of the largest motor the battery is able to run

Closely observe the rotation of the motor to see if the direction of spin reverses when the poles of the battery are switched

Connect a series of motors to the same battery to figure out how many motors can be run off the same battery.

The table provided shows data collected by students during an investigation of two electromagnets. Which of the following conclusions is supported by data on the table?

The greater the charges of two electromagnets, the greater the size of the force.

When two electromagnets are of like charges, they attract each other.

Electromagnets that repel each other have more force than those that attract each other.

If the charge on one magnet is positive, the charge on the other must be negative.

This table shows the magnitude of electromagnetic force exerted by two electromagnets on each other as the distance between the two electromagnets is varied. The data on the table provide evidence for which of the following conclusions?

The smaller the distance between two electromagnets, the greater the force.

The force between any two magnets is always constant, regardless of distance.

As distance between electromagnets increases, the electromagnetic force also increases.

The force between two magnets depends only on the charge of the electromagnets.

Fundamentals of Electric Charge and Electric Fields

9th - 12th Grade

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57 Qs

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Fundamentals of Electric Charge and Electric Fields

Quiz

•

Science

•

9th - 12th Grade

•

Practice Problem

•

Easy

•

NGSS

MS-PS2-3, MS-PS2-5, HS-PS2-5

Standards-aligned

Heriberto Jacques

Used 3+ times

FREE Resource

57 questions

Show all answers

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following is a conductor?

sheet of paper

t-shirt

penny

plastic bottle

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following is the best insulator?

metal paper clip

wood log

bowl of water

penny

In static electricity, similar charges

attract.

behave like N & S poles

remain neutral

repel

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

To build a basic circuit, you need wires, a light bulb, and

an insulator

another light bulb

a battery

a rubber band

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following demonstrates static electricity?

Putting your fingers near an electrical outlet could result in a painful shock.

You bend a paperclip back and forth until it breaks. The broken end feels hot.

After tumbling with other clothes in a warm dryer, your sock sticks to your shirt.

You use a charger to charge your cell phone battery.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the pairs of balloons will repel each other?

Set A

Set B

Set B and Set C

Set A and set D

What will happen when you remove a bulb from the circuit pictured?

The other bulb will become brighter.

The other bulb will turn off.

The other bulb will become dimmer.

It will remain a closed circuit.

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Fundamentals of Electric Charge and Electric Fields

57 questions

Which of the following is a conductor?

Which of the following is the best insulator?

In static electricity, similar charges

To build a basic circuit, you need wires, a light bulb, and

Which of the following demonstrates static electricity?

Which of the pairs of balloons will repel each other?

What will happen when you remove a bulb from the circuit pictured?

In the drawing of the electromagnet, A is the

In the drawing of the electromagnet, letter B is the

Which type of magnet can be turned off?

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