Electric field lines were introduced by:
Faraday
Newton
Coulomb
Joule
One coulomb is equal to charge of electrons:
6.25x10-19
6.25x1019
6.25x1018
6.25x10-18
The process by which electrons are emitted by a hot metal surface is known as:
Boiling
Evaporation
Conduction
Thermionic emission
If a neutral body is brought near to the electroscope its leaves:
Diverge
Contract
Shut
Remain in normal position
When a positive charge of 2 coulombs is placed at a point in an electric field, it experiences a force of 6N. The intensity of electric field at this point is:
6 NC-1
3 NC-1
12 NC-1
1.5 NC-1