What is the typical voltage of a mains supply in many countries?

• a) 5 volts
• b) 12 volts
• c) 120 volts
• d) 230 volts

The SI unit of electric charge is named after:

• a) Albert Einstein
• b) Michael Faraday
• c) James Clerk Maxwell
• d) Charles-Augustin de Coulomb

Which instrument is used to measure electric current?

• a) Ammeter
• b) Voltmeter
• c) Thermometer
• d) Barometer

Which instrument is used to measure mass?

• a) Ammeter
• b) Voltmeter
• c) Beam balance
• d) Thermometer

Echoes occur when sound waves:

• a) Are absorbed by a surface
• b) Are reflected off a surface
• c) Are refracted through a medium
• d) Pass through a vacuum

The number of protons in the nucleus of an atom determines its:

• a) Atomic mass
• b) Atomic number
• c) Isotopic mass
• d) Electron configuration

What device is used to measure atmospheric pressure?

• a) Barometer
• b) Thermometer
• c) Hydrometer
• d) Manometer

A diverging lens is a lens that:

• a) Bends light rays inward
• b) Bends light rays outward
• c) Does not affect light rays
• d) Reflects light rays

The point through which the entire weight of an object appears to act is known as the:

• a) Centre of Mass
• b) Centre of Gravity
• c) Centre of Inertia
• d) Centre of Rotation

The force that keeps an object moving in a circular path is called:

• a) Centrifugal force
• b) Centripetal force
• c) Gravitational force
• d) Inertial force