Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Electricity & Magnetism > Elec & Mag > Flashcards

Elec & Mag Flashcards

0
Q

A material’s _________________ measures how much the material opposes the flow of electric current.

A

Resistance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

An electric current easily passes through a wire that is a ?

A

Conductor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

A circuit that connects several objects in a single path is?

A

Series circuit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

An object that attracts iron and steel is a _____________.

A

Magnet

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

An electric current does not pass easily through an _____________.

A

Insulator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The force around a magnet is________________.

A

Magnetism

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

When electric current runs through a loop of wire, it makes an______________.

A

Electromagnet

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

A small magnet that can turn freely is a ______________.

A

Compass

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The current for each appliance has its own path in a ____________.

A

Parallel circuit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

A machine that uses an energy source and a magnet to make electricity is a ______________.

A

Generator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

The space around a magnet where magnetism acts is a ____________.

A

Magnetic field

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Magnetism is strongest at the ____________ of a magnet.

A

Poles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

When two objects have different electric charges, they ____________.

A

Attract or pull toward each other

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Electric current is the flow of ______________.

A

Negative charges through matter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Electric wires are coated with plastic or rubber because these materials are ________________.

A

Insulators

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Every time you turn on a light, you open or close a circuit __________.

A

Close a circuit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

When you turn off one light, all the lights in the room go off. This is an example of a series or parallel circuit _____________.

A

Series circuit

17
Q

If you hold the south poles of two magnets near each other, what will happen?

A

The poles will repel or push away

18
Q

Most electric generators make electricity using _____________.

A

A magnet and an energy source

19
Q

The invention of the compass shows the earth acts like a giant ______________.

A

Magnet

20
Q

When you rub two balloons together, ____________ charges can move from one to the other.

A

Negative

21
Q

The flow of negative charges through matter is called ____________.

A

Electric current

22
Q

Electric current only flows through a circuit when it is open or closed?

A

Closed

23
Q

The northern lights are caused by the earth’s _______________.

A

Magnetic field

24
Q

A machine that produces electricity is a _____________.

A

Generator

25
Q

When two objects have different electric charges, they _________.

A

Attract or pull together

26
Q

The purpose of insulation on a wire is to ___________.

A

Make the electric current stay on its path

27
Q

Which of these substances is the best conductor of electricity?
A. Air B.rubber C. Plastic D. Metal

A

D. Metal

28
Q

Electric current will flow through a circuit as long as the path is_____.

A

Unbroken or closed

29
Q

What is a parallel circuit?

A

Each object has its own electrical path

30
Q

If a magnet is allowed to swing freely, the north-seeking pole will point ____________.

A

North

31
Q

The northern lights are caused when?

A

Charged particles form a pattern around the earth’s magnetic poles

32
Q

Electric current can be generated by?

A

Sliding back and forth or turning a magnet through a coil of wire

33
Q

Electromagnet is created when _______________ flows through a coil wire.

A

Electricity

34
Q

When you push a doorbell, you are opening or closing a circuit?

A

Closing

35
Q

As you rub a balloon on your sleeve, it picks up _________ charges.

A

Negative

36
Q

If you sprinkle tiny pieces of iron over a magnet, the pattern formed shows a _________________.

A

Magnetic field

37
Q

How did Hans Christian Oersted discover that electricity and magnetism are related?

A

While experimenting with electric circuits he discovered that electric current could make a compass needle move.

38
Q

You walk across a thick carpet and reach out to turn on a light switch. Why do you feel a shock?

A

Your body picks up negative charges which move from your hand to the switch.

39
Q

How are electromagnets used to make electric power?

A

Generators have huge electromagnets with huge coils of wire and magnets. They use a power source to move the magnet and produce electricity.

40
Q

Name three power sources for a generator.

A

Wind, water, steam, nuclear or burning of coal, gas, or oil

Electricity & Magnetism (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions