Quiz about Electricity and Magnetic Force Review

Question 1

An example of the result of static discharge is

Accepted Answer

all of the choices are correct

Answer

lightning

Answer

feeling a shock when you touch a doorknob

Answer

seeing a spark when you pet your cat

Question 2

The attraction or repulsion between magnets is

Accepted Answer

magnetism

Answer

magnetic force

Answer

magnetic poles

Answer

magnetic field

Question 3

A paper clip is made into a temporary magnet using a bar magnet. The paper clip will be a magnet

Accepted Answer

as long as contact exists

Answer

as long as current is flowing

Answer

permanently over time

Answer

only in the presence of another paper clip

Question 4

A magnet always exerts a(n) ________ on an object that is not itself a magnet.

Accepted Answer

pull

Answer

push

Answer

gravitational field

Answer

electric field

Question 5

The location on a magnet where the magnetic force is the strongest is known as

Accepted Answer

magnetic pole

Answer

magnetic field

Answer

magnetism

Answer

compass

Question 6

In a single magnetic field, when the field lines are closer together, the field is _______________ when they are far apart.

Accepted Answer

stronger than

Answer

weaker than

Answer

the same as

Answer

more

Question 7

Earth's magnetic field changes the ______________ of the charged particles from the sun.

Accepted Answer

motion

Answer

composition

Answer

charge

Answer

direction

Question 8

The constant stream of particles from the sun is known as the

Accepted Answer

solar wind

Answer

solar flare

Answer

solar energy

Answer

arctic blast

Question 9

Earth's magnetic poles are

Accepted Answer

more than one option is correct

Answer

located near the geographic poles

Answer

where the planet's magnetic field is the strongest

Answer

where the magnetic field lines cross each other

Question 10

Materials in the __________ of the Earth generate a magnetic field that surrounds the planet.

Accepted Answer

core

Answer

mantle

Answer

crust

Answer

rocks

Question 11

In a single and combined magnetic field, the field lines never

Accepted Answer

cross

Answer

get close together

Answer

interact

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indicate the direction of the field

Question 12

When particles in an object line up with the magnetic field lines around them, it becomes a ________________ magnet.

Accepted Answer

temporary

Answer

permanent

Answer

horseshoe

Answer

bar

Question 13

The source of magnetic energy for a magnet is the

Accepted Answer

magnetic field

Answer

magnetic poles

Answer

Earth's core

Answer

electric current

Question 14

As you apply a force to separate two opposite poles, the potential energy of the system

Accepted Answer

increases

Answer

decreases

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remains the same

Answer

none of the choices are correct

Question 15

On magnets, like poles ________ each other and opposite poles __________,

Accepted Answer

repel; attract

Answer

attract; repel

Answer

pull; push

Answer

interact with; do not interact with

Question 16

What types of materials attract a magnet?

Accepted Answer

materials that contain iron

Answer

materials that are shiny

Answer

materials containing any type of metal

Answer

materials that contain another magnet

Question 17

Examples of materials that have loosely bound electrons are

Accepted Answer

copper and gold

Answer

silver and glass

Answer

rubber and wood

Answer

gold and wood

Question 18

When the number of protons and electrons in an atom are equal the atom is

Accepted Answer

neutral

Answer

positive

Answer

negative

Answer

static

Question 19

When objects charge through ___________________, the electrons move to the other side of their atoms.

Accepted Answer

polarization

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friction

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conduction

Answer

induction

Question 20

When charges are transferred to an object and do not flow like current, the buildup of charge is called

Accepted Answer

static electricity.

Answer

electric potential energy

Answer

gravitational potential energy

Answer

static discharge

Question 21

Because their electrons are tightly bound together, __________________ do not allow charge to flow.

Accepted Answer

insulators

Answer

conductors

Answer

metals

Answer

batteries

Question 22

In a battery, the electric energy that becomes the potential energy of the charges comes from

Accepted Answer

the energy from chemical substances.

Answer

the gravitational potential energy

Answer

the difference in potential energy

Answer

the resistance to electron flow

Question 23

The difference in electric potential energy per charge is

Accepted Answer

voltage

Answer

ampere

Answer

resistance

Answer

gravity

Question 24

In a circuit, current flows

Accepted Answer

from a point of higher potential energy to lower potential energy.

Answer

from a point of lower potential energy to higher potential energy

Answer

in the direction in which positive currents would flow

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from the energy source to the electric device only

Question 25

The potential energy __________________ as the electric forces between two like forces repel each other.

Accepted Answer

decreases

Answer

increases

Answer

does not change

Answer

becomes half as much

Question 26

Because it is also an attractive force, _______________ potential energy is similar to electric potential energy.

Accepted Answer

gravitational

Answer

kinetic

Answer

mechanical

Answer

chemical

Question 27

Charged particles can experience electric forces between them without touching because an electric charge is surrounded by a(n)

Accepted Answer

electric field

Answer

field lines

Answer

conductor

Answer

atom

Question 28

The strength of electric force depends on

Accepted Answer

the distance between the charges and the amount of charge present

Answer

the number of electrons present and the type of conductor

Answer

the direction of the current and amount of voltage

Answer

the amount of potential energy and charge present

Question 29

If an object loses an electron, it has an overall _____________ charge; If an object gains an electron, it has an overall ______________ charge.

Accepted Answer

positive; negative

Answer

negative; positive

Answer

neutral; negative

Answer

positive; neutral

Question 30

In a solenoid, the magnetic field is strengthened in the center of the coil

Accepted Answer

when a current runs through a coil.

Answer

when the ends of the solenoid acts like the poles of a magnet.

Answer

when there is no current running through the coil.

Answer

when the direction of the electric current is reversed.

Question 31

A solenoid with a ferromagnetic core

Accepted Answer

is called an electromagnet.

Answer

has a weaker magnetic field than one without.

Answer

is unable to produce a magnetic field.

Answer

does not have any practical uses.

Question 32

What is the main difference when a current flows through a loop of wire compared to a straight wire?

Accepted Answer

Shaping a wire into a loop can increase the strength of the magnetic field .

Answer

You cannot use the right-hand rule to determine the direction the current flows.

Answer

The magnetic field cannot be turned off by turning the current off.

Answer

The strength of the magnetic field does not depend on the strength of the current.

Question 33

How do electric currents relate to magnetic fields?

Accepted Answer

An electric current produces a magnetic field that runs around the wire.

Answer

A magnetic field produces an electric current that runs around the wire.

Answer

A magnetic field can stop an electric current from flowing.

Answer

They are not related.

Question 34

How can you change the strength of a magnetic field around a current carrying wire?

Accepted Answer

Change the amount of current running through the wire.

Answer

Change the direction of the current running through the wire.

Answer

Use the right hand rule.

Answer

The strength cannot be changed

Question 35

In a straight wire with a current flowing, the direction of the magnetic field depends on

Accepted Answer

the direction of the current.

Answer

the strength of the current.

Answer

the strength of the magnetic field.

Answer

the distance between the current and wire.

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