Quiz about Electrical and Magnetic Forces

Question 1

How could I increase the strength of my electromagnet?

Accepted Answer

More Batteries

Accepted Answer

More loops of copper wire

Answer

Smaller paper clips

Answer

Larger Nail

Question 2

Atoms That have a positive charge will be attracted to atoms with a ______________ charge.

Accepted Answer

negative

Answer

positive

Answer

no charge

Question 3

What forces works only by combining electric and magnetic forces?

Accepted Answer

electromagnet

Answer

electric

Answer

magnetic

Answer

static electricity

Question 4

This force occurs when there is an attractive and repulsive force between two poles.

Accepted Answer

Magnetism

Answer

Electric

Answer

Electromagnetism

Answer

Static Electricity

Question 5

What type of force is holding this balloon to the wall?

Accepted Answer

Electrical

Answer

Applied

Answer

Gravitational

Answer

Magnetic

Question 6

In a magnet the opposite poles will

Accepted Answer

Attract

Answer

Repel

Answer

Neither

Question 7

Like poles will

Accepted Answer

Repel

Answer

Attract

Answer

Neither

Question 8

The magnetic field of a magnet is ____________ further away from the magnet.

Accepted Answer

Weaker

Answer

Smaller

Answer

Stroner

Answer

Larger

Question 9

Electric charges that do not move through a current are known as

Accepted Answer

Static Electricity

Answer

Electricity

Answer

Magnetism

Answer

Electromagnetism

Question 10

When electrons flow through wires from a - terminal to a + terminal a/an ___________ is created.

Accepted Answer

Current

Answer

Flow

Answer

Electromagnet

Answer

Magnet

Question 11

The area around an electric charge that experiences the force exerted by the electric charge.

Accepted Answer

Electric Field

Answer

Magnetic Field

Answer

Electric Force

Answer

Magnetic Force

Question 12

An electric field that is + moves __________ to/from the charge.

Accepted Answer

Outward

Answer

Inward

Question 13

What is this image showing.

Accepted Answer

Magnetic Field

Answer

Electric Current

Answer

An Electromagnet

Answer

Magnetic Force

Question 14

When electrons all spin in the direction, they create an invisible force known as_______

Accepted Answer

Magnetism

Answer

Electricity

Answer

Static Electricity

Answer

Electromagnet

Question 15

Select all the examples of an electromagnet.

Accepted Answer

Speaker

Accepted Answer

Hard Drive

Accepted Answer

Motor

Accepted Answer

Junkyard Magnet

Answer

Refrigerator Magnet

Question 16

This force occurs when ions create attractive and repulsive forces.

Accepted Answer

Electric Current

Answer

Magnetic Force

Answer

Electromagnet

Answer

Magnetism

Question 17

In an electromagnet, coils of wire are wrapped around a magnetic object to generate a magnetic field. What the is relationship between number of coils and the strength of the magnetic field?

Accepted Answer

The more coils an electromagnetic has, the stronger the magnetic field

Answer

The more coils an electromagntic has, the weaker the magnetic field

Answer

The larger the metal object, the stronger the magnetic field is

Answer

There is no relationship between number of coils and the strength of a magnetic field

Question 18

To decrease the strength of a magnetic field around an electromagnet, we must

Accepted Answer

decrease the number of coils

Answer

increase the number of coils

Answer

increase the size of the iron core

Answer

decrease the size of the iron core

Question 19

Students rubbed a balloon across a square carpet to give it an electrical charge. They found the charged balloon could pick up pieces of paper.

What data could they collect to decide if the electric charge is getting stronger?

Accepted Answer

The number of pieces the paper picked up

Answer

The length and width of the balloon

Answer

The size of the piece of carpet

Answer

The distance the balloon was rubbed

Question 20

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?

Accepted Answer

The spoon now picks up seven paper clips.

Answer

The ends of the wire must touch the battery terminals.

Answer

Eventually, the battery runs out of energy.

Answer

More wire was needed to wrap around the spoon.

Question 21

Which of the two below result in an attractive force?

Accepted Answer

A positive charge and a negative charge

Accepted Answer

A north pole and a south pole

Answer

Two negative charges

Answer

Two south poles

Answer

Two postive charges

Question 22

What is the primary difference between electric and magnetic forces?

Accepted Answer

Electric forces act between charged particles, while magnetic forces act between magnetic poles.

Answer

Electric forces require a medium to act, while magnetic forces do not.

Answer

Electric forces are always attractive, while magnetic forces are always repulsive.

Answer

Electric forces are stronger than magnetic forces in all situations.

Question 23

Which of the following devices uses both electric and magnetic forces to function?

Accepted Answer

Electric fan

Answer

Light bulb

Answer

Magnet

Answer

Battery

Question 24

In an experiment, a student observes that a compass needle deflects when placed near a current-carrying wire. What scientific principle does this demonstrate?

Accepted Answer

Magnetic fields are created by moving electric charges.

Answer

Electric fields can influence magnetic materials.

Answer

Electric charges are attracted to magnetic poles.

Answer

Magnetic poles can create electric charges.

Question 25

Which of the following best describes the relationship between electricity and magnetism in the context of electromagnetic induction?

Accepted Answer

A changing magnetic field creates an electric field.

Answer

A changing electric field creates a magnetic field.

Answer

A static electric field creates a magnetic field.

Answer

A static magnetic field creates an electric field.

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