Static electricity

opposite charges

• attract each other

• repel each other

like charges ( example: - and - )

• attract each other

• repel

Materials can become electrically charged when .............. transfer electrons

• frictional forces

• gravitional forces

• muscular forces

• elastical forces

A Van de Graff generator is used to produce a ..... amount of electric charge

• large

• small

What is a simple intrument used to detect the presence of electric charge of an object?

• microscope

• electroscope

• telescope

• generator

The work done in moving one unit of charge between two points in an electric field is called ....

• the electrical difference

• the potential difference

In our nervous system, information is transmitted by .....

• the electrical impulse

• the potential difference

• magnetic force

• electron

Animals can generate electricity for their ...

• ego

• survivability

• behaviour

• food

Which of the following is negatively charged?

• proton

• electron

• neutron

• atom

When a glass rod is rubbed with silk, the rod becomes positively charged because ...

• the proton is transferred from silk to glass rod

• the electron is transferred from silk to glass rod

• the proton is transferred from glass rod to silk

• the electron is transferred from glass rod to silk