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WorksheetsElectric Charge
Total questions: 20
Worksheet time: 10mins
An object becomes positively charged when it __________.
loses electrons
loses protons
gains electrons
gains neutrons
As the distance between two charged objects increases, the strength of the electrical force between the objects __________.
varies
remains the same
increases
decreases
As the amount of charge on two objects increases, the strength of the electrical force between the objects __________.
increases
decreases
varies
remains the same
The diagram shows a coiled wire that carries an electrical current.
What do the arrows represent?
the magnetic field
thermal energy
light energy
the electric field
Georgia moves an unattached piece of wire back and forth over a magnet. Which best explains what will happen?
A current will be induced because the wire moves through a magnetic field.
A current will not be induced because the wire moves through a magnetic field.
A current will be induced because the wire is not part of a closed circuit.
A current will not be induced because the wire is not part of a closed circuit.
Frances drew a diagram to show electromagnetic induction.
Which label belongs in the area marked X?
current
magnetic field
solenoid
force on wire
What happens to an iron bar when it is placed within the coils of a solenoid?
It induces a current.
It stops the current.
It becomes a magnet
It loses its magnetism.
An object that is made of which material is likely to be attracted to a magnet?
nitrogen
nickel
paper
plastic
How are the magnetic field lines near the south pole of a magnet affected when a second south pole is brought near it?
The field lines combine with the lines around the second south pole.
The field lines overlap with the lines from the second south pole.
The field lines bend toward the second south pole.
The field lines bend away from the second south pole.
Which statement correctly describes Earth’s magnetic field?
A compass can lead a hiker to the geographic North Pole.
The magnetic pole near the South Pole is a north pole.
Compasses point toward a magnetic pole that is a north pole.
Field lines circle Earth from east to west.
Which will a positively charged object attract?
an object that has a negative charge
an object that has a smaller positive charge
an object that has no charge
an object that has a larger positive charge
Tisa makes a diagram to organize her notes about charging objects.
Which statement should she place in the region marked X?
Electrons move between objects.
The objects do not touch.
The objects develop opposite charges.
The objects have the same charge.
How does increasing the distance between charged objects affect the electric force between them?
The electric force increases because the distance has an indirect relationship to the force.
The electric force increases because the distance has a direct relationship to the force.
The electric force decreases because the distance has an indirect relationship to the force.
The electric force decreases because the distance has a direct relationship to the force.
A magnet placed against the wall of a metal shed falls to the ground, where it attracts a nail. What is the most likely explanation for this observation?
The wall is the opposite pole from the magnet.
The shed is not made of iron or steel.
The magnet is not magnetized.
The nail pulled the magnet to the ground.
Two objects are held close together. When they are released, they move toward one another. Which conclusion is supported by this evidence?
The objects are both positively charged.
The objects are both negatively charged.
The objects have no charge.
The objects have opposite charges.
Which change will decrease the electric force between two positively charged objects?
moving them closer together
moving them farther apart
adding neutrons
removing electrons
A compass needle normally points toward Earth’s magnetic pole, which is near the North Pole. Which best explains why the needle moves away from the pole when it comes close to a current-carrying wire?
A compass needle normally points toward Earth’s magnetic pole, which is near the North Pole. Which best explains why the needle moves away from the pole when it comes close to a current-carrying wire?
Magnetism surrounding the wire weakens the magnetic force of the pole.
Current within the wire draws the needle toward the wire.
Magnetism surrounding the wire draws the needle toward the wire.
What is the term for producing a current by moving a wire through a magnetic field?
solenoid induction
flowing induction
electromagnetic induction
coiled induction
A compass taken to Earth’s moon does not point in a specific direction on the moon.
What is the most likely reason for the difference between how the compass works on Earth and on the moon?
The moon lacks an atmosphere.
The moon contains no rocks that have iron.
The moon does not have a strong magnetic field.
The moon has no bodies of water.
Which factors affect the strength of the electric force between two objects?
the mass of the objects and the distance between the objects
the amount of charge on the objects and the type of charge on the objects
the distance between the objects and the amount of charge on the objects
the mass of the objects and the amount of charge on the objects
