Electricity Revision

Conductors have many free electrons to conduct electricity

• True

• False

When a switch is open..

• Current can flow in a circuit

• Current cannot flow in a circuit

The energy to move the electrons in a circuit comes from the ___________

In the circuit, electrons move from

• positive to negative terminal of battery

• negative to positive terminal of battery

The direction of conventional current is from

• negative to positive terminal of battery

• positive to negative terminal of battery

In a circuit with a bulb, which of these is more resistant to flow of electrons

• Wire connecting bulb to battery

• Wire of filament of bulb

Which of these energy changes take place in a battery ?

• Electrical to chemical energy

• Chemical to electrical energy

Current comprises of movement of

• Electrons only

• Protons only

• Both Protons and electrons

• None of the above

True or false : All metals are conductors of electricity

• True

• False

Which of these non-metals is a conductor of electricity

• Sulphur

• Graphite

• Phosphorus

• Iodine