Name the commercial unit of electric energy.
Kilowatt hour
Joule
Watt
Erg
Resistivity of superconductor is
Greater than 1
One
Less than one
Zero
The phenomenon of radioactivity was discovered by
Otto Hahn
Henri Becquerel
Madame Marie curie
Rutherford
Which of the following has conductivity more than good conductors and less than insulators?
Super conductors
Semi conductor
Metals
Liquids
The amount of electric charge that flows through the circuit is 2.5 C and the time taken is 5 s. Find the amount current flowing ?
4 A
0.4 A
40 A
None of these
Fossil fuel is a
Renewable source of energy
Non-renewable source of energy
Kind of electrical energy
Hydro electric energy
The unit of potential difference is
Ampere
Ohm
Coulomb
Volt
One coulomb is equivalent to
6 x 108 electrons
6 x1018 electrons
6 x 1010 electrons
6 x 1020 electrons
Unit of charge is
A region where an electric charge experiences a force due to other charges is called
An electric field
Magnetic field
Circuit
Potential difference
