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Electricity And Magnetism Spring 23

Total questions: 44

Worksheet time: 1hrs 17mins

Name
Class
Date
1.
If you place the North pole of a magnet next to the South pole of another magnet, they will:
a)
Attract
b)
Repel
c)
Do nothing
d)
Shatter
2.
What happens when two north poles of a magnet are placed together?
a)
they repel
b)
they attract
c)
they cancel each other out
d)
the strength of the magnet is doubled
3.
In un-magnetized materials the domains are __________ aligned.
a)
super
b)
slightly
c)
randomly
d)
always
4.
Electric motors are devices that convert _____ energy into  _____ energy.
a)
electrical; mechanical
b)
mechanical; electrical
c)
chemical; potential
d)
mechanical; kinetic
5.
What kind of magnet can be turned on and off?
a)
refridgerator magnet
b)
electromagnet
c)
magnetite
d)
iron
6.
Region around a magnet in which magnetic force can act.
a)
Magnetic field 
b)
Magnetic force
c)
Domain
d)
Perimeter
7.
Magnets that are arranged like this will _______. 
a)
move away from each other (repel)
b)
move towards each other (attract)
8.

What is the source of a magnetic field?

a)

Moving electric charge

b)

Stationary Electric Charge

c)

There is no source.

9.

A magnetic domain is

a)

a cluster of aligned atoms

b)

a singular aligned atom

c)

a cluster of non-aligned atoms

10.

if you break a bar magnet in half

a)

the poles will seperate

b)

You will have two complete magnets

c)

it becomes unmagnetized

11.

Which pole of the compass needle points to a south pole of a magnet?

a)

South pole

b)

North Pole

c)

Both poles

12.

Which two particles are attracted to each other?

a)

Two neutrons

b)

A proton and an electron

c)

Two protons

d)

An electron and a neutron

13.

A repulsive force exists between which two particles?

a)

Two neutrons

b)

An electron and a neutron

c)

An electron and a proton

d)

Two electrons

14.
The Electric Force is strongest when charges are...
a)
close together
b)
far apart
c)
the electric force is constant everywhere
15.

Electric Field strength depends on what

a)

charge

b)

distance

c)

charge and distance

d)

electric force

16.
What subatomic particles would you find in the nucleus of an atom?
a)
Protons only
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons and Electrons 
17.
What charge does a proton have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
18.
If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?
a)
A positive charge.
b)
A negative charge.
c)
A neutral charge
d)
No charge at all
19.

What is static electricity caused by?

a)

A balance of power

b)

A balance of positive and negative charges

c)

An imbalance of positive and negative charges

d)

An imbalance of protons and neutrons

20.
An object becomes postiively charged when which of the following occurs?
a)
loses electrons
b)
gains electrons
c)
loses protons
d)
gains neutrons
21.
The girl's hair and the comb are attracting  one another.  The hair and the comb have
a)
opposite charges
b)
like charges
22.
What makes a charged balloon stick to the wall?
a)
Protons transferred to the balloon when it was rubbed on metal.
b)
Extra electrons on the surface of the balloon push away electrons in the wall, leaving a positively charged area.
c)
The rubber in the balloon has a magnetic field that pulls on the wood in the wall.
d)
Electricity in the balloon creates a magnetic field that attracts the metal in the wall.
23.

Ohm's Law is equal to...

a)

V = A/R

b)

V = 1/A x R

c)

V = A x R

d)

V= I2I^2 x R

24.

What is the total resistance in this series circuit?

a)

350 Ω\Omega

b)

550 Ω\Omega

c)

500 Ω\Omega

d)

450 Ω\Omega

25.

Which resistor has the most current going through it?

a)

100 Ω\Omega

b)

50 Ω\Omega

c)

300 Ω\Omega

d)

all the same

26.

What is the total resistance of the circuit?

a)

9 Ω\Omega

b)

3 Ω\Omega

c)

27 Ω\Omega

d)

1 Ω\Omega

27.

What is the total current of the circuit, if the total resistance is 9Ω?

a)

2A

b)

1A

c)

0.33A

d)

3A

28.

What is the voltage across the middle resistor, if the current is 1A?

a)

1V

b)

3V

c)

5V

d)

4V

29.

If the current is 15 A and the resistance is 4Ω, what is the voltage on the battery?

a)

40V

b)

30V

c)

50V

d)

60V

30.

This circuit has only one path for current to flow

a)

series

b)

parallel

c)

combination

d)

split

31.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
32.
____________ stops the flow of electricity.
a)
A conductor
b)
An insulator
c)
A magnet
33.
Two types of circuits are
a)
parallel and magnetic
b)
electromagnetic and series
c)
series and parallel
34.
In a ________ circuit there are multiple paths for the current to take.
a)
Series
b)
Parallel
35.
In a _________ circuit, if one bulb goes out then the entire circuit doesn't work.
a)
Series
b)
Parallel
36.
What is the unit for resistance?
a)
Volts
b)
Amperes
c)
Ohms
37.
What type of circuit is pictured?
a)
series
b)
parallel
38.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
39.
If the battery produced 12.6 Volts and what would be the current flow be for a 6 Ohm resistor
a)
2.1 Amps
b)
2.4 Amps
c)
1.71 Amps
d)
15 Amps
40.
What voltage is needed to cause a 2A current flow through a 10Ω resistor?
a)
5V
b)
0.2V
c)
20V
d)
200V
41.
What resistance is needed to cause a 20A current flow because of a 100V battery?
a)
0.2Ώ
b)
2000Ώ
c)
120Ώ
d)
5Ώ
42.
Current is...
a)
moving protons
b)
moving electrons
c)
measured in volts
d)
measured in ohms
43.
The two types of current are...
a)
AC/DC
b)
Alternating Current
c)
Direct Current
d)
All of the above
44.
Voltage is simply defined as...
a)

pressure that 'pushes' electrons

b)

resistance that 'stops' electrons

c)

moving electrons

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