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WorksheetsElectromagnetism Review
Total questions: 13
Worksheet time: 10mins
All electric charge is based on the ___________ in atoms.
Protons and Electrons
Protons and Neutrons
Neutrons and Protons
Neutrons and Electrons
An _______ _______ is a physical property of particles or objects that causes them to attract or repel each other without touching.
electrical charge
electrical circuit
electrical force
Electric ________ is the attraction or repulsion between charged particles.
charge
force
The strength of an electric force depends on the ___________ of electric charge on the particles and the ______________ between them.
Amount; distance
Size; distance
Type; attraction
What does magnets repelling mean?
Magnets move away from each other
Magnets do not have magnetism
Magnets move towards each other
Electromagnetism is a magnetism produced by an electric current.
True
False
Which of the following factors influences the strength of an electromagnet?
The number of coils
The amount of current
The iron core (diameter)
All the above
The power source of an electric motor is a _____.
sparkplug
battery
magnet
A motor's motion comes from which property of magnets?
Like poles repel each other
Opposite poles attract each other
Both A and B
Electric current can flow through a wire only if it forms a ____
Open Loop
Closed Loop
A closed loop through which current can flow is called an ____
Electric Force
Electric Current
Electric Circuit
A Van de Graaff generator becomes
electrically charged by scraping electrons onto a metal plate, which are conducted to the dome.
electrically neutral by scraping electrons onto a metal plate, which are conducted to the dome.
electrically charged by scraping protons onto a metal plate, which are conducted to the dome.
When the objects move from the metal plate to the dome, they
repel and move to one side of the dome
repel and move apart to cover the dome
attract and collect on the dome
transfer back to the belt
