The direction of electric field lines due to positive charge is:
A way from the charge
Towards the charge
Both a and b
None of these
Instrument used for detecting and testing the nature of charge on a body is called:
Incubator
Spectroscope
voltmeter
electroscope
Electric potential and e.m.f.:
Are the same terms
Are the different terms
Have different units
Both b and c
If a dielectric medium is present between two point charges them electrostatic force will be:
Increased
Decreased
Vanishes
Remain same
1.6x10-19 J= :
1F
1N
1eV
Application of electrostatic is:
Car painting
Photocopying
Extracting of dust
All of these
