Electrcity and circuits

Which gas is most useful to keep filament cool?

• Oxygen

• Argon

• Hydrogen

• Carbon dioxide

• Nitrogen

Which of the following are parts of bulb?

• Metal cap

• Metallic base

• metal Case

• Filament

• Supporting wires

True/false

A simple device that can either break or complete a circuit is known as electric circuit

Which terminal is at metal disc

• Positive terminal

• Negative terminal

• None of these

Solar battery converts

• Chemical energy into electric energy

• Solar energy into electric energy

• electric energy into chemical energy

When the filament of a electric bulb breaks it becomes

The symbol of Switch 'ON' position is

• 
• 
• 
• 

A combination of 2 or more cells are called

• Battery

• Generator

• Transformer

• Engine

Which of the following are conductor of electricity?

• Metal

• Wood

• Sharpener blade

• Water

• Glass

_______________ is used to measure the conductivity of metal

• Closed circuit

• Conduction Tester

• Electric switch

• Electric cell