Electric Components And Symbols

What does the black part in all battery indicate?

• Negative

• Positive

_______ is used to apply a potential between the two ends of a conductor .

• Cell

• Resistor

• Switch

• None of the above

A _____ converts chemical energy into electrical energy

A __________ is a combination of _________ cells

what is the defination of switch ?

• Switch is used to restrict the flow of current.

• Switch is used to allow the flow of current.

• Switch is used to stop the flow of current.

Substances which allow electric charge or electric current to pass through them are called ___________

Which of these is not a good conductor of electricity.

• Aluminium

• Rubber

• Silver

• Copper

What is the full form of led?

• Light Emitting Disc

• Light Emitting Doide

• Light Emitting Diode

• Light Conducting Diode

What is the positive terminal in a bulb called ?

• Cathode

• Anode

What is negative terminal in the bulb called ?

• Anode

• Cathode