THE DISCOVERY OF ELECTRICITY

What is the Greek word from which electricity is derived?

• elektron

• atom

• proton

• neutron

What are the smaller particles that make up atoms?

• protons and neutrons

• electrons

• ions

• molecules

What happens when an atom loses or gains electrons?

• it becomes an ion

• it becomes neutral

• it becomes a molecule

• it becomes a proton

What is the attractive force between two charged bodies called?

• static force

• electrostatic force

• gravitational force

• nuclear force

What is electric current?

• electric charge in motion

• static electricity

• a type of atom

• a form of energy

How can we think of the flow of electrons in a wire?

• as the flow of water in a pipe

• as the flow of air

• as the flow of electricity

• as the flow of heat

What is the charge of a proton?

• variable

• neutral

• negative

• positive

Which particle is found in the nucleus of an atom?

• electron

• neutron

• ion

• molecule

What is the unit of electric current?

• volt

• ohm

• ampere

• watt

What is the unit of electric potential difference?

• ohm

• ampere

• volt

• watt