WorksheetsElectricity Test
Total questions: 54
Worksheet time: 46mins
Lewis Latimer was a charter member of the Edison Pioneer, a distinguished group of people who with Thomas Edison, were considered responsible for creating the electrical industry.
True
False
Thomas Edison’s initial light bulb’s major weakness was that it did not provide sufficient light.
True
False
Among Latimer’s contributions was creating a safety elevator and a locking rack for hats.
True
False
According to the Law of Charges, if the girl's hair and the comb are attracting one another, then the hair and the comb must have
opposite charges
like charges
True or False:
In static electricity, charges build up on an object, but they do not flow continuously.
True
False
The figure shows a positively charged glass rod and a temporarily charged metal sphere.
Which type of charging is this?
Conduction
Induction
Simulated
Reversed
What is the SI unit for charge?
Electrons
Coulombs
Ampere
Volt
Charge moves from the rod to the sphere and charges the initially neutral sphere.
Which type of charging is this?
Conduction
Induction
Simulated
Reversed
Which letter in the illustration represents a Proton?
A
B
C
Which letter in the illustration represents an electron?
A
B
C
Which letter in the illustration represents a neutron?
A
B
C
A coulomb is the unit for charge. What is charge?
The potential energy of a charged particle in an electric field.
The Flow of Charge
The amount of Work per Charge
The fundamental property of matter causing electrical force between protons and neutrons
What is The potential energy of a charged particle in an electrical field?
Induction
Electricity
Current
Conduction
What quantity is the opposition to current and is measured in Ohms?
voltage.
resistance
electric current.
potential.
A device that opposes, but allows, current to flow is a
battery.
conductor.
insulator.
resistor.
Voltage is measured in Volts which is equal to ...
CJ Amount of Work per Charge
RV amount of charge flow in time.
IV amount of opposition to charge.
sJ amount of power used in a circuit.
What 'flows' in a wire?
Protons
Neutrons
Atoms
Electrons
This is the symbol for a
switch.
light bulb.
battery.
complete circuit.
Alessandro Volta invented the
light bulb.
battery.
resistor.
electric motor.
Lewis Latimer along with WC Brown invented
the telephone.
an improved steam engine.
a toilet for trains.
the arc lamp light bulb.
What force is most responsible for the bonds that create our material world with all of its variation and wonderful properties?
gravity
electric
weak
strong
Which is NOT a type of bond?
ionic
covalent
strong
metallic
Which is NOT a physical property?
color
flammability
hardness
density
Which are properties of ionic compounds?
Form crystals, hard, brittle, high melting and boiling points
Low melting and boiling points, poor conductors
Shiny, good conductors, malleable, ductile
Which is NOT a chemical property?
burning
flammability
hardness
chemical reactivity
Which is true about metals?
They are gasses at room temperature.
They are good conductors of heat and electricity.
They are brittle.
They have low melting points.
Resistance is the opposition to
voltage.
power.
electric current.
potential.
This is a devise with a tiny bar magnet that can rotate and sense a magnetic field.
motor
generator
compass
magnet
This is a devise that rotates/moves when an input current interacts with a magnetic field.
motor
generator
compass
magnet
This is a devise that creates an electric current by spinning a coil of wire past a magnetic field.
motor
generator
compass
magnet
This is a devise that creates a magnetic field around itself by locking tiny domains in a common orientation within a material.
motor
generator
compass
magnet
Which illustration represents a material that is highly magnetized?
A
B
C
D
Which illustration represents a material that is non-magnetized?
A
B
C
D
Which illustration represents a material that is partially magnetized?
A
B
C
D
Which illustration represents a material that is non-magnetic?
A
B
C
D
Electric current in a coil produces
a voltage.
a magnetic field.
static electricity.
resistance.
Moving a bar magnet into a metal coil produces
an electric current.
static electricity.
a vacuum.
resistance.
Your teacher rubbed two balloons with a piece of silk. Why will the balloon's repel each other?
Because the practice Quizziz said so.
Because the side that got rubbed heated up and pushes on the air
The balloons will both share the same charge
The Balloons will now have opposite charges
If a substance has a higher number of protons than electrons on its surface, what type of charge does it have?
A positive charge.
A negative charge.
A neutral charge
No charge at all
What happens when you touch a metal doorknob after rubbing your shoes on the carpet?
The doorknob sends a burst of electric current into your body
Millions of electrons go from your finger into the doorknob
The doorknob sends millions of electrons into your finger
our finger becomes negatively charged
If two objects with static charge are attracted, what do you know about them?
They are both positively charged.
They are both negatively charged.
One is positively charged and one is negatively charged.
One is positively charged and one is neutral.
What makes a charged balloon stick to the wall?
Protons transferred to the balloon when it was rubbed on metal.
Extra electrons on the surface of the balloon push away electrons in the wall, leaving a positively charged area.
The rubber in the balloon has a magnetic field that pulls on the wood in the wall.
Electricity in the balloon creates a magnetic field that attracts the metal in the wall.
Coulomb's law says that the force between any two charges (q1 & q2) depends on which of the following. (May be more than one answer!)
the type of atoms that are charged
q1
q2
r (the distance between the charges)
G
Which of the following properly describes an atom? (There may be more than one choice!)
An atom is mostly empty space.
An atom is always neutral.
An atom is a super tiny, solid ball.
An atom is made up of smaller particles.
What is electric current?
The number of charged particles that pass a point each second.
The difference in electrical potential.
The amount of resistance to electrical charge flow.
The amount of conductivity in a circuit.
Why don’t protons in the nucleus repel each other?
Protons have a negative charge, so they attract each other.
The strong force holds the protons and neutrons together against the electric force.
The electrons stabilize the repulsion between the protons.
The neutrons have a negative electric charge so they attract the protons.
Coulomb’s Law shows that electric force gets stronger when
charges are farther apart.
either or both charges are increased.
both charges are positive.
both charges are negative.
Coulomb’s Law shows that electric force gets stronger when
charges are farther apart.
charges are closer together.
both charges are positive.
both charges are negative.
When a magnetic compass is placed near a wire carrying a direct electric current,
nothing happens.
the compass needle moves parallel to the wire.
the compass needle moves perpendicular to the wire.
the compass needle goes back and forth.
Moving a bar magnet into a metal coil produces
an electric current.
static electricity.
a vacuum.
resistance.
An electric motor uses
motion to produce electric current.
static electricity to produce magnetism.
electric current to produce motion.
magnetism to create magnets.
The output energy of a generator is
much greater than the input energy.
slightly greater than the input energy.
equal to the input energy.
is less than the input energy.
If you spin a generator faster, the output power is
smaller.
larger.
the same.
it depends on the generator type.
The property of magnetism comes from a concept called
proton spin.
electron spin.
neutron spin.
atomic magnetism.
