Science & Principles

Which of the following conductors decreases in resistance when temperature is increased?

• Copper

• Carbon

• Aluminium

• Tungsten

A good insulating material has ...

• Mainly negative ions

• Many free protons

• Few free electrons

• A surplus of electrons

Which material is an insulator?

• Rubber eraser

• Aluminium foil

• Paper clip

• Gold

Thicker conductors have ....... resistance than thinner conductors

• More

• Less

• The same

• X 10

Identify the conductor below

• Cloth rag

• Gold ring

• Plastic bottle

• Rubber eraser

Which formula represents Ohms Law?

• V= IR

• R= IV

• I= RV

• P= R+I

An accumulation of electrons on an object is known as .......

• Static electricity

• AC

• Current

• Voltage

How many volts are in a circuit with a battery that has a resistance of 10 Ohms and a current of 2 Amps?

• 5 V

• 0.5 V

• 20 V

• 200 V

Electricity is the flow of......

• Protons

• Electrons

• Neutrons

• Resistance

What type of circuit is pictured?

• Series

• Parallel