Automotive Electrical and Electronics

The smallest particle of a substance is called.........?

• Molecules

• Atom

• Electron

• Proton

If a positive charge comes mear to an other positive charge, what happens?

• They repel each other

• They attract each other

• They never response

• None of these

If two negative charges come near, what happens?

• They attract each other

• They repel each other

• They stand still

• None of these

If two unlike charges ( a positive and a negative) comes near, what happens?

• They attract each other

• They repel each other

• They stand still

• None of them

Materials that permit flow of electrons are called .......

• Conductor

• Insulator

• Semiconductor

• None of these

• Materials that block flow of electrons are called ........

• Insulator

• Semiconductor

• Conductor

• None of them

• Materials whose conductivity falls between those of conductors and insulators are called............

• Semi insulators

• Semiconductors

• Super conductor

• None of these

Which of the following is comes under conductors?

• Copper

• Mica

• Germanium

• Dry wood

Which of the following is comes under insulators......

• Aluminium

• Rubber

• Silicon

• Silver

Which of the following is comes under semi conductors?

• Copper

• Glass

• Silicon

• Teflon