WorksheetsElectricity and Magnetism
Total questions: 15
Worksheet time: 15mins
The area around the magnet in which its force appears is known as
Electric current
Magnetism
Magnetic field
Air
Some materials cannot be attracted to the magnet because they are
Magnetic material
Non magnetic material
Located in the magnetic field
energy that comes from an electrical circuit
sound energy
mechanical energy
light energy
electrical energy
How does the electromagnet in the diagram above demonstrate the relationship between magnetism and electricity?
The wire is wrapped around the iron core, but no electric circuit is present.
The wire is wrapped around the iron core, but no energy source is present.
The wire in the electric circuit is wrapped around an iron core producing a magnetic field.
No circuit is present.
Which of the following is flowing through the electromagnet above?
electric current
magnetic current
magnetic energy
chemical energy
In order for the electromagnet above to lose its magnetism, which of the following must occur?
The wire of the circuit must be tightened.
The battery in the circuit must be switched for a different brand.
The electric current must stop flowing in the circuit.
No circuit is present.
What energy transformation occurs in this device?
electrical energy to mechanical energy
chemical energy to mechanical energy
mechanical energy to chemical energy
mechanical energy to electrical energy
Which of the following is the best description of a generator?
A generator produces an electric current when a coil of wire wrapped around an insulator is rotated near a battery.
A generator produces an electric current when a coil of wire wrapped around an iron core is rotated near a magnet.
A generator produces an electric current when a coil of wire wrapped around an iron core is rotated near another iron core.
None of the above
What purpose do magnets serve in an electric motor?
The magnets serve as a source of energy for the motor.
The magnets change the flow of the electric current.
The magnets cause the coil to rotate by their poles attracting and repelling.
The magnets are not a necessary part of a motor.
Which of the following is the most appropriate definition for magnetic field?
an area surrounding a magnet that does not apply a force (a push or pull)
an area directly on the magnet that applies a force (a push or pull) without actually touching an object
an area of magnetism surrounding a magnet that applies a force (a push or pull) without actually touching an object
an area surrounding a magnet that applies a force (a push or pull), but only by directly touching an object
If placed in a magnetic field, which of the following materials would be affected?
a compass
wood chips
plastic paper clips
pieces of glass
What is the unit of electric current?
Ampere
Volt
Ohm
Watt
Which of the following materials is a good conductor of electricity?
Rubber
Glass
Copper
Wood
What happens to the resistance of a wire as its length increases?
It decreases
It increases
It remains the same
It becomes zero
Which of the following devices is used to measure electric current?
Voltmeter
Ammeter
Ohmmeter
Thermometer
