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Electricity and Magnetism Review

Total questions: 35

Worksheet time: 19mins

Name
Class
Date
1.
This picture is an example of what kind of circuit?
a)
Series
b)
Complete
c)
Parallel
d)
Broken
2.
How is a parallel circuit different from a series? 
a)
It has multiple paths for the current to follow and the voltage stays the same in all lights
b)
It has many branches that get weaker farther from the battery
c)
They are two circuits running side by side
d)
They are the same thing
3.
What will the bulbs look like when this circuit is turned on?
a)
They will be equally bright
b)
The one in the middle will be brighter than the one on top
c)
The one on top on will be brighter than the middle one
d)
This circuit does not work
4.
If you increase the total voltage in a circuit how will it affect the light bulb? 
a)
The light bulb will stay the same
b)
It will burn out
c)
The bulb will get brighter
d)
It will get dimmer
5.
Tiny particles surrounding atoms that have a negative charge are called...
a)
protons
b)
neutrons
c)
electrons
d)
circuits
6.

This type of circuit has more than one path, so when one light goes out, the others stay on.

a)

closed circuit

b)

series circuit

c)

parallel circuit

d)

open circuit

7.

What do the lines around this magnet represent?

a)

North pole

b)

South pole

c)

Magnetic declination

d)

The magnetic field

8.

An electrical current is _________________.

a)

flow of electrons

b)

flow of protons

c)

the presence neutrons

d)

shocking

9.

An object becomes positively charged when which of the following occurs?

a)

loses protons

b)

gains electrons

c)

loses electron

d)

gains neutrons

10.
How do two negative charges interact when they are brought close together?
a)
repel, no electricity
b)
no interaction
c)
attract, make electricity
d)
ground
11.
What charge does an electron have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
12.
The strongest parts of a magnet are called the________.
a)
Needles
b)
Poles
c)
Ends
d)
Orientation
13.
What causes magnetism?
a)
They movement of electrons within certain metals
b)
The movement of protons within certain metals
c)
An invisible force felt throughout the universe
d)
The transfer of electrons between objects
14.
Is it possible for magnetic fields to cross each other?
a)
Yes
b)
Maybe
c)
Never
d)
Always
15.
When and object is negatively charged it has _____________.
a)
More protons than electrons
b)
More electrons than protons
c)
More electrical charge than magnetic force
d)
Less energy than it had before
16.

If you put your hand on a van de graaff generator your hair stands on end. Why does this happen?

a)

By the swapping of protons and electrons between you and the generator

b)

Through conduction the generator fills your body, head, and hair with electrons, your (-) charged hair is repelled from your (-) charged head!

c)

The generator induces the electron's in you hair to move over.

d)

The generator is creating friction in you hair, adding electrons until it too becomes negatively charged and is repelled

17.
What is the charge of a proton?
a)
Positive
b)
Neutral
c)
Negative
d)
Zero
18.

How does increasing the number of coils effect an electromagnet?

a)

It makes it weaker

b)

It makes it stronger

c)

It doesn't change anything

d)

It switches the poles

19.

How are like electrical charges (+, + or -, -) and like magnetic poles (N, N or S, S) similar?

a)

They are both attracted to eachother

b)

They both repel eachother

c)

They both can shock you

d)

They have nothing in common

20.

True or False: Electrons are the only parts of atoms that can be moved.

a)

True

b)

False

21.

A door knob has 28 electrons and 18 protons, is the net charge...

a)

Positive

b)

Negetive

c)

Neutral

22.
This picture is showing a 
a)
Broken Battery
b)
Magnet
c)
Circuit
d)
Electromagnet
23.
Electromagnets are created by...
a)
Electrical Magnets
b)
Magnets being plugged into electrical sockets
c)
The flow of an electrical current around a metal core. Aligning the electrons and making a magnetic field
d)
The flow of protons around a magnet, creating a positive charge
24.
A balloon has 15 protons and 7 electrons, the balloons net charge is...
a)
Positive
b)
Negetive
c)
Neutral
25.
The counter top has 12 electrons and 12 protons, the counters charge is...
a)
Positive 
b)
Negetive
c)
Neutral
26.

Looking at the picture, how are the poles on these bar magnets most likely oriented?

a)

South/ North, South/ North

b)

North/ South, South/ North

27.
These magnetic fields are showing which rule of magnetism?
a)
Opposites attract
b)
The closer magnets are the stronger the force
c)
Like poles repel each other
d)
The force is with you
28.

When you see sparks jump from the Van Dur Graaff generator to another object what is happening?

a)

Protons are being transferred between them

b)

Neutrons are moving around in the air

c)

Electrons are being transferred from the generator to the other object through conduction

d)

Electrons are dying

29.
Electromagnets are different than regular magnets because...
a)
They have no poles
b)
They can be turned on and off
c)
They have a stronger force
d)
Their magnetic fields can cross
30.
When you increase the voltage of the battery in an electromagnet you are really changing the ____________.
a)
Proton number
b)
Electrical current (electron flow)
c)
Electron force
d)
Orientation of the poles
31.
True or False: In a parallel circuit if you cut the wires in one place the rest of the lights will stay on.
a)
True
b)
Flase
32.
If you increase the number of electrons something has you are...
a)
Giving it a negative charge
b)
Creating a positive charge
c)
Making the object neutral
d)
Make the object magnetic
33.

Magnetic fields come out the N side and back in the S side, when placed S to S the fields move ___________, and ___________.

a)

together, attract

b)

apart, attract

c)

Same direction, repel

d)

Apart, repel

34.
What is a series circuit?
a)
The transfer of electrons from one object to another
b)
A circuit with a single path the current follows
c)
A circuit that goes in multiple directions
d)
A circuit that takes place in a series of events
35.
Why are parallel circuits more commonly used in houses?
a)
Because they are faster than series
b)
Because if one light has a problem the rest will still work
c)
Because they are easier for electricians to wire
d)
Because they use less electricity

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