Electrical circuits T2 W1

Identify the list that only contains electrically charged particles

• Protons, electrons, ions

• Protons, electrons, neutrons

• Protons, neutrons, radicals

• Protons, ions, neutrons

Recall the name of the law that states that charge is conserved at all points in an electrical circuit

• Ohm's law

• Kirchoff's voltage law

• kirchoff's current law

• The law of conservation of energy

Calculate the amount of charge passing through a point in 5 minutes with a current of 250mA

• 1.25 C

• 75 C

• 1250 C

• 75 000 C

Identify one of the following as the correct reason why metals are good conductors

• Metals contain free electrons

• The atoms in metals vibrate more easily than in non-conductors

• Metals have bigger gaps between their atoms than in insulators

• The atoms in metals can move about

A 20 C charge passes an ammeter in 5 seconds, calculate the electric current.

Calculate how many electrons are in a lightning bolt that moves 10 C of charge

Answer in scientific notation

When there is an electric current passing through a wire, the particles moving are:

• Electrons

• Protons

• Atoms

• Ions