Which of the following is correct regarding electric charge ? (i) If a body is having positivr charge i.e. shortage of electrons (ii) If a body is having negative charge i.e. excess of electrons (iii) Minimum possible charge `= +- 1.6 xx 10^(-19) C` (iv) Charge is quantised i.e. `Q = +- n e`, where `n = 1 , 2, 3, 4 ....`

Would the Bohr formula for the H-atom remain unchanged if proton had a charge (+4//3) e and electron a charge (-3//4) e , where e = 1.6 xx 10^(-19) C . Given reasons for you answer.

(a) How many electorns are in 1C of negative charge? (b) Which is the true test of electrification: attraction or repulsion? (c ) Can a body have a charge of 0.8xx10^(-19)C ?

(a) Explain the meaning of the statement ‘electric charge of a body is quantised’. (b) Why can one ignore quantisation of electric charge when dealing with macroscopic i.e., large scale charges?

An electron having charge 'e' and mass 'm' is moving a uniform electric field E . Its acceleration will be

The number of extra/short electrons in a conductor that has 14.4 xx 10^(-19) coulombs of positive charge is: (Charge on electron = 1.6 xx 10^(-19) coulombs)

The number of electrons delivered at the cathode during electrolysis by a current of 2 ampere in 120 seconds is (charge on electron =1.6xx10^(-19)C) :-

The Avogadro's number is 6.02xx10^(23) per gm mole and electronic charge is 1.6xx10^(-19) C . The Faraday's number is

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