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WorksheetsElectrical and Magnetic Forces
Total questions: 80
Worksheet time: 44mins
Name
Class
Date
1.
A positively charged particle in an atom.
a)
proton
b)
neutron
c)
electron
d)
they're all positive
2.
A negatively charged particle in an atom.
a)
proton
b)
neutron
c)
electron
d)
positron
3.
A neutrally charged particle in an atom.
a)
proton
b)
neutron
c)
electron
d)
positron
4.
The attractive and repulsive forces between two poles.
a)
atomic forces
b)
static repulsion
c)
magnetic forces
d)
electromagnetism
5.
A force combining both electric and magnetic forces.
a)
Electromagnetism
b)
static magnetism
c)
magnoelectricism
d)
reverse magnetism
6.
This force can occur when ions create attractive and repulsive forces.
a)
Electric Force
b)
Atomic Force
c)
Armed Forces
d)
Static Magnetism
7.
Electrons all spin in the same direction and create an invisible force called _____
a)
magnetism
b)
static charge
c)
electricity
d)
magic
8.
The power of a magnet is known as the __________ of that magnet.
a)
magnetic force
b)
electric force
c)
electromagnet
d)
static charge
9.
As poles of a magnet come close to each other, they either _____ or ____
a)
attract, repel
b)
stick, push away
c)
attract, appeal
d)
repel, repeal
10.
Around the poles of a magnet exists a __________ that will either attract or repel objects.
a)
magnetic field
b)
magnetic pole
c)
static charge
d)
magnetic box
11.
The stronger the magnet, the larger the _________
a)
magnetic field
b)
magnetic box
c)
static charge
d)
sticking zone
12.
Magnetic field lines that curve towards each other show ____
a)
attraction
b)
repulsion
13.
Magnetic field lines that curve away from each other show ____
a)
attraction
b)
repulsion
14.
Magnetic field lines begin at the _____ Pole and end at the ____ Pole.
a)
North, South
b)
South, North
c)
East, West
d)
North, East
15.
When electrons line up in the same direction, it is called _____
a)
magnetic domain
b)
magnetic lines
c)
eminent domain
d)
static domain
16.
A coil of wire wrapped around an iron core
a)
magnet
b)
electromagnet
c)
static magnet
d)
electrostatic
17.
This image is showing
a)
attraction
b)
repulsion
18.
This is an example of a
a)
electromagnet
b)
circuit breaker
c)
staticmagnet
d)
batterymagnet
19.
Electric charges create
a)
electric forces
b)
magnetic forces
c)
armed forces
d)
static forces
20.
The type of electricity that DOES NOT move through a current.
a)
static electricity
b)
magnetic electricity
c)
current electricity
d)
voltage electricity
21.
When you rub a balloon on your head, you are transferring ____ to the balloon.
a)
electrons
b)
protons
c)
neutrons
d)
positrons
22.
When an object loses electrons, it has a _____ charge.
a)
negative
b)
positive
c)
neutral
23.
When an object gains electrons, it has a _____ charge.
a)
negative
b)
positive
c)
neutral
24.
V= 110 V C= 12 A
Solve for resistance
Solve for resistance
a)
9.17 Ω
b)
1320 Ω
c)
9.17 A
d)
9.17 R
25.
C = 17 A R= 6 Ω
Solve for Voltage
Solve for Voltage
a)
102 V
b)
2.83 V
c)
102 A
d)
2.83 Ω
26.
V= 220 V R = 18 Ω
Solve for Current.
Solve for Current.
a)
12.22 A
b)
3960 A
c)
12.22 Ω
d)
12.22 V
27.
What are the 2 types of electric charge?
a)
Positive and Negative
b)
Positive and Reverse
c)
North and South
d)
Negative and Reverse
28.
What is voltage measured in?
a)
volts
b)
amps
c)
ohms
d)
watts
29.
This can supply energy to a circuit.
a)
battery
b)
wires
c)
bulb
d)
switch
30.
A closed conducting loop.
a)
circuit
b)
circus
c)
battery
d)
series
31.
Which type of charges attract each other.
a)
likes
b)
opposites
c)
all charges attract
d)
they just like each other as friends
32.
Which type of charges repel?
a)
opposites
b)
likes
c)
no charges repel
d)
uggos
33.
Materials that DO NOT allow the flow of electrons. Inhibit the flow of electrons.
a)
insulator
b)
conductor
c)
instigator
d)
contractor
34.
Materials that DO allow the flow of electrons. Encourage the flow of electrons.
a)
insulator
b)
conductor
c)
contractor
d)
instigator
35.
Which of the following is an example of a good conductor?
a)
copper
b)
wax
c)
plastic
d)
glass
36.
Which of the following is an example of an insulator?
a)
plastic
b)
gold
c)
copper
d)
aluminum
37.
Unit of measure for current.
a)
Amp (A)
b)
Current (C)
c)
Ohm (Ω)
d)
Volt (V)
38.
Which of the following is NOT a reason why copper wires are used in a home?
a)
good conductor
b)
do not heat up and start fires
c)
low resistance
d)
they are cheap
39.
How electrons move in a battery.
a)
negative to positive
b)
negative to negative
c)
positive to negative
d)
positive to neutral
40.
What happens when you add a new device to a series circuit.
a)
current increases
b)
current decreases
c)
voltage increases
d)
voltage decreases
41.
Circuit that has more than one path for electric current to follow.
a)
parallel
b)
series
c)
all circuits
42.
A circuit where all devices are connected along the same path.
a)
series
b)
parallel
c)
all circuits
d)
open circuits
43.
Which of the following is NOT something that resistance of a wire depends on?
a)
thickness
b)
material
c)
length
d)
cost
44.
This is a diagram of a
a)
Series circuit
b)
Parallel Circuit
45.
This is a diagram of a
a)
series circuit
b)
parallel circuit
46.
Which type of circuit is best for use in homes?
a)
series
b)
parallel
c)
neither
47.
This is a symbol for a
a)
battery
b)
bulb
c)
switch
d)
wire
48.
This is a symbol for a
a)
switch
b)
bulb
c)
battery
d)
wire
49.
What type of path must you provide for electrons to flow properly?
a)
open
b)
closed
c)
mixture of both
d)
mowed
50.
Which of the following is the correct formula for current?
a)
I = V/R
b)
I = V X R
c)
I = V/I
d)
V= I X R
51.
Which of the following is the correct formula for voltage?
a)
V = I X R
b)
V = I/R
c)
V = V X R
d)
V = R/C
52.
Which of the following is the correct formula for resistance?
a)
R = V/I
b)
R = VXR
c)
R= VXI
d)
R= I/V
53.
V= 120 V I= 2.3 A Solve for R
a)
52.17 Ω
b)
52.17 R
c)
276 Ω
d)
276 C
54.
I= 1.2 A R= 840 Ω Solve for V
a)
1008 V
b)
1008 Ω
c)
700 V
d)
.0015 V
55.
V= 67.5 V R= 1500 Ω Solve for I
a)
0.045 A
b)
0.045 C
c)
101250 A
d)
101250 V
56.
Electric charges will only flow when
a)
the circuit is closed and everything is connected
b)
the circuit is open
c)
it wants to
d)
there's a light bulb
57.
When resistance of wire/device increases
a)
current decreases
b)
current increases
c)
voltage increases
d)
watts decreases
58.
When voltage increases
a)
current decreases
b)
current increases
c)
voltage decreases
d)
resistance increases
59.
In a series circuit, when a path is broken
a)
everything still works
b)
everything stops working
c)
everything stays the same
60.
An open circuit means
a)
there is a break in the circuit
b)
everything is connected
61.
A closed circuit means
a)
everything is connected and electricity is flowing
b)
something is diconnected and electricity is not flowing
c)
something is disconnected and electricity is flowing
d)
everything is connected and electricity is not flowing
62.
What safety features are in homes that limit current in wiring?
a)
circuit breaker
b)
circuit connector
c)
circuit disconnector
d)
wire cutter
63.
The human body is a(n)
a)
insulator
b)
conductor
64.
In a parallel circuit, if one device is broken
a)
the circuit will continue to work
b)
the continue will not work
65.
Unit of measure for resistance
a)
Ohm
b)
Volt
c)
Amp
d)
Current
66.
When you add a new device to a parallel circuit, the current
a)
stays the same
b)
decreases
c)
increases
d)
goes away
67.
The I in the V= IR formula stands for
a)
intensity
b)
voltage
c)
resistance
68.
Insulators have a ______ resistance than conductors
a)
higher
b)
lower
69.
Stationary charge built up on the surface of a material
a)
static electricity
b)
magnetic electricity
c)
static magnetism
d)
magnetic static
70.
Excess charges are balanced as electrons move. Results in a "spark" or "shock"
a)
static discharge
b)
magnetic discharge
c)
electric field
d)
magnetic field
71.
The stored energy of a circuit.
a)
voltage
b)
ohms
c)
current
d)
wire
72.
Rate of flow of charged particles.
a)
current
b)
voltage
c)
volts
d)
magnetism
73.
Degree of opposition to movement of current.
a)
resistance
b)
current
c)
voltage
d)
conductor
74.
The relationship between current, voltage, and resistance.
a)
Ohm's Law
b)
Adams' Law
c)
Ohm's Theory
d)
Big Bang Theory
75.
Controlled path for the movement of electrons.
a)
Electric Circuits
b)
Magnetic Circuits
c)
Electric toothbrush
d)
Electric static
76.
Two basic kinds of circuits.
a)
series and parallel
b)
series and intersecting
c)
parallel and dissecting
d)
series and circular
77.
Current flowing through a wire surrounded by a magnetic field creates a(n)
a)
electromagnet
b)
electrostatic
c)
magnetic static
d)
static field
78.
Wire wrapped around a piece of iron or steel
a)
electromagnet
b)
electrostatic
c)
static magnet
d)
staticelectromagnet
79.
Which of the following is NOT a way to make an electromagnet stronger?
a)
increase the number of loops of wire
b)
increase the current or voltage
c)
decrease the wire size
d)
change the type of core
80.
How does a circuit breaker work?
a)
switch opens to stop current
b)
switch closes to force current
c)
causes a fire to make everyone leave the house
d)
it doesn't work
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