Electrical Science 202 1\6

What is the smallest part of any material called?

• Atom

• Molecule

• Quark

• Dark Matter

What are the two main parts of an atom called?

• Nucleus and Proton

• Electron and Nucleus

• Proton and Electron

• Electron and Positron

An electrically neutral atom has:

• more electrons than protons

• more protons than electrons

• as many protons as there are electrons

• an uneven number of protons and electrons

A positively charged atom will:

• attract a nearby electron

• become electrically neutral

• repel electrons

• cease to exist

What does EMF stand for?

• Extendedmechanical Force

• Electrostatic Force

• Electromechanical force

• Electromotive Force

What is the flow of electrons around a circuit called?

• A voltage

• An electric current

• An electrical resistance

• An electrical charge

In order for electrons to flow, a circuit must:

• have an open circuit switch

• be complete with no breaks

• have no voltage source

• have a lamp fitted in the circuit

The charge state of a proton and electron are

• positive and negative respectively

• negative and positive respectively

• both positive

• both negative

A conductor is a material that:

• will not allow the flow of current

• will not allow the movement of electrons

• has protons that can easily be dislodged

• has loosely attached electrons that can easily be dislodged

Which of the following materials are electrical conductors

• oil, sea water and steel

• iron, lemon juice and dirty water

• mercury, platinum and porcelain

• plastic, concrete and gold