Electricity (one Q number higher for each Q number)

The SI unit of charge is

• ampere

• coulomb

• farad

• volt.

The SI unit of electric current is

• ohm

• volt

• ampere

• coulomb.

A current of 1 A is drawn by a filament of an electric bulb. Number of electrons passing through a cross section of the filament in 16 seconds would be roughly

Volt is the SI unit of

• potential difference

• current

• resistance

• charge.

No current flows between two charged bodies when connected, if they have same

• capacity

• potential

• charge

• none of these.

Which of the following represents voltage?

• 
• Work done × Charge

• 
• Work done × Charge × Time

The surface of the earth is taken to be at

• infinite potential

• negative potential

• positive potential

• zero potential

Electrical resistivity of a given metallic wire depends upon

• its length

• its thickness

• its shape

• nature of the material

• A/2

• 3A/2

• 2A

• 3A