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Motors and generators

Total questions: 13

Worksheet time: 13mins

Name
Class
Date
1.
Surrounding every magnet is a __________  __________.
a)
magnetic field
b)
electrical current
c)
another magnet
d)
an enemy
2.
Generators are devices that convert _____ energy into _____ energy.
a)
chemical; mechanical
b)
mechanical; electrical
c)
electrical; mechanical
d)
potential; kinetic
3.

In a _______ a spinning turbine moves magnets which generates an electric current.

a)

Motor

b)

Generator

4.
What can you use to make an electromagnet?
a)
Battery, nail and string 
b)
Battery, pencil and wire
c)
Wire, battery and iron ore (nail)
d)
Peanut butter, lampshade, hand sanitizer
5.
What device is made of coils of wire with an electrical current passing through it in order to generate a magnetic field?  
a)
Electromagnet 
b)
Generator
c)
Electron Magnet 
d)
Motor
6.

what is electromagnetic induction

a)

when you induce magnets

b)

when you use chemicals to make science

c)

the ability to use an electrical current to create a magnetic field and vise versa

d)

the ability to use an magnetic field to create an electrical current and vise versa

7.

true or false- motors and generators are opposites

a)

true

b)

false

8.

Look at the picture what is letter B?

a)

Armature

b)

Commutator

c)

Permanent Magnet

d)

DC Source

e)

AC Source

9.

Look at the picture what is letter D?

a)

Armature

b)

Commutator

c)

Permanent Magnet

d)

DC Source

e)

Brush

10.
What will happen when these magnets are brought close together?
a)
They will attract each other.
b)
They will repel each other.
c)
Both magnets will turn to the left
d)
Both magnets will turn to the right
11.

Which best describes how a motor works?

a)

When a fan blows on a wire, it causes it to spin, creating a force.

b)

When a fan blows on a wire, it causes it to spin, creating an electrical current.

c)

When a wire that carries electrical current is placed in zero gravity, the wire experiences a force.

d)

When a wire that carries electrical current is placed in a magnetic field, the wire experiences a force.

12.

A motor includes

a)

an armature

b)

a commutator

c)

a solenoid

d)

brushes

13.

In a motor: the field of these causes the armature to turn

a)

Power source

b)

Commutator

c)

Armature field

d)

Magnets