WorksheetsU6 Electricity and Magnetism
Total questions: 47
Worksheet time: 24mins
Name
Class
Date
1.
As in the case of unlike magnetic poles, unlike electric charges ____.
a)
attract each other
b)
repel each other
c)
exist in pairs
d)
do not interact
2.
The buildup of charges on an object is called ____.
a)
static discharge
b)
static electricity
c)
positive charge
d)
negative charge
3.
What causes charges to move in a circuit?
a)
voltage
b)
energy
c)
electricity
d)
magnetism
4.
An electric current will always follow ____.
a)
the path of least resistance
b)
a path toward the north pole
c)
a path toward the south pole
d)
the path that leads through insulators
5.
In a series circuit with three bulbs, adding another bulb will ____.
a)
make the nearest bulb brighter
b)
make some of the bulbs dimmer
c)
make all the bulbs brighter
d)
make all the bulbs dimmer
6.
In a parallel circuit with three bulbs, ____.
a)
the bulbs must all be located on the same branch
b)
there is only one path for the current to take
c)
current from each bulb has its own path
d)
the overall resistance increases if a new branch is added
7.
The charge on a proton is ____.
a)
negative, and the charge on an electron is positive
b)
positive, and the charge on an electron is negative
c)
the same as the charge on an electron
d)
can change according to the situation
8.
A complete, unbroken path through which electric charges can flow is a (an) ____.
a)
electric circuit
b)
electrical resistance
c)
magnetic field line
d)
magnetic pole
9.
Materials that allow the charges of an electric current to move freely through them are called ____.
a)
insulators
b)
conductors
c)
resistors
d)
magnets
10.
An example of an insulator is ____.
a)
rubber
b)
copper
c)
silver
d)
iron
11.
A device used to open and close an electric circuit is a (an) ____.
a)
light bulb
b)
energy source
c)
switch
d)
resistor
12.
Magnetic poles that are alike ____
a)
attract each other
b)
repel each other
c)
do not interact
d)
have the same shape
13.
The region around a magnet where the magnetic force is exerted is known as its ____.
a)
magnetic pole
b)
lodestone
c)
magnetic field
d)
magnetic domain
14.
One part of a freely swinging magnet always points ____
a)
east
b)
to Earth’s geographic north pole
c)
toward Earth’s core
d)
to Earth’s magnetic pole in the Northern Hemisphere
15.
Magnetic poles that are unlike ____
a)
attract each other
b)
repel each other
c)
do not interact
d)
point in the same direction
16.
A temporary magnet ____.
a)
keeps its magnetism for a long time
b)
cannot be destroyed
c)
easily loses its magnetism
d)
has two north poles
17.
The closer together a magnet’s magnetic field lines are, ____.
a)
the weaker the magnetic field
b)
the stronger the magnetic field
c)
the closer they are to the magnet’s center
d)
the closer they are to disappearing
18.
Which type of energy is associated with electric currents?
a)
mechanical energy
b)
electrical energy
c)
magnetic energy
d)
geothermal energy
19.
The type of current produced by a battery is ____.
a)
direct current
b)
alternating current
c)
magnetic current
d)
induced current
20.
A device that increases or decreases voltage is called a (an) ____.
a)
alternator
b)
transformer
c)
generator
d)
turbine
21.
An alternating current consists of charges that ____.
a)
turn on and off repeatedly
b)
move back and forth in a circuit
c)
flow in one direction only
d)
flow in one direction in some devices and change direction in others
22.
An electric current produces a (an) ____.
a)
magnetic field
b)
magnet
c)
solenoid
d)
insulator
23.
Electric charges that are different __________________ each other.
a)
Attract
b)
Series
c)
Fuse
d)
Increase
24.
In a __________________ circuit, there is only one path for current to take
a)
Attract
b)
Series
c)
Fuse
d)
Decrease
25.
A __________________ must be replaced after too much current in it causes it to melt.
a)
Series
b)
Fuse
c)
Increase
d)
Repel
26.
Increasing the number of loops in a solenoid will cause the strength of its magnetic field to __________________.
a)
Decrease
b)
Repel
c)
Increase
d)
Domain
27.
Like electric charges __________________ each other.
a)
Attract
b)
Fuse
c)
Melt
d)
Repel
28.
In a (an) __________________ circuit, different parts of the circuit are on separate branches.
a)
perpendicular
b)
parallel
c)
domain
d)
lines
29.
A switch can be used to open and close an electric __________________.
a)
board
b)
direct
c)
core
d)
circuit
30.
A magnetic __________________ is a grouping of billions of atoms that all have magnetic fields lined up in the same way.
a)
circuit
b)
domain
c)
magnetic field
d)
core
31.
A (an) __________________ is the region of magnetic force around a magnet.
a)
magnetic field
b)
core
c)
direct
d)
solenoid
32.
Earth’s magnetism is related to the circulation of molten material within Earth’s __________________.
a)
direct
b)
core
c)
circle
d)
increase
33.
A current consisting of charges that flow in one direction only is called a(an) __________________ current.
a)
direct
b)
attract
c)
opposite
d)
core
34.
A (an) __________________ is a coil of wire that has a current.
a)
solenoid
b)
ferromagnetic
c)
electromagnetic
d)
electrical energy
35.
A solenoid with a(an) __________________ core is called an electromagnet.
a)
solenoid
b)
ferromagnetic
c)
electromagnetic
d)
electrical energy
36.
A (an) __________________ is a strong magnet that can be turned on and off.
a)
Solenoid
b)
ferromagnetic
c)
electromagnetic
d)
electrical energy
37.
An electric motor transforms __________________ into mechanical energy.
a)
solenoid
b)
ferromagnetic
c)
electromagnetic
d)
electrical energy
38.
Which circuit—A or B—represents a series circuit?
a)
A
b)
B
39.
Which circuit—A or B—is a parallel circuit?
a)
A
b)
B
40.
Which circuit diagram represents circuit B?
a)
A
b)
B
c)
C
d)
D
e)
E
41.
What will happen to bulb 1 in circuit A if the switch is opened?
a)
Bulb 1 will go out
b)
Bulb 1 will stay on
c)
Bulb 1 will flicker
42.
Will removing bulb 1 in circuit B cause bulb 3 to go out?
a)
Yes
b)
No
43.
What will happen to bulb 2 in circuit diagram D if bulb 1 burns out?
a)
Bulb 1 and 3 will go out
b)
Bulb 2 will go out
c)
All bulbs will stay on
d)
All bulbs will flicker
44.
Extra Credit?
a)
Yes
b)
No
45.
What happens to the magnetic field when the current in a solenoid is increased?
a)
It decreases
b)
It disappears
c)
It remains the same
d)
It increases
46.
Which of the following materials is a good conductor of electricity?
a)
Copper
b)
Rubber
c)
Wood
d)
Plastic
47.
What is the effect of increasing the number of loops in a coil on its magnetic field?
a)
The magnetic field disappears
b)
The magnetic field remains unchanged
c)
The magnetic field strengthens
d)
The magnetic field weakens
100 %
