What will be the no. of electrons removed from a body in order to produce a positive charge of `48 xx 10^-20` coulomb on it?

The number of electrons removed from a body in order to produce positive charge of 5 xx 10^-19 coulomb on it, will be

4xx10^16 electrons are removed from a conductor. The conductor acquires a charge of

When 10^19 electrons are removed from a neutral metal plate, the elctric charge on it is

How many electrons need be removed from a metal sphere of 0.05 m radius so that it acquires a charge of 4 xx 10^-15 C ? e = 1.6 xx 10^-19 C.

Choose correct alternative. A current of 3.2 ampere is flowing in a conductor. The number of electrons per second through the conductor will be [Charge on the electron = 1.6 xx 10^-19 coulomb].

a copper sphere of mass 2 g contains about 2xx10^22 atoms. The charge on the nucleus of each atom is 29e. What fraction of the electrons must be removed from the sphere to give it a charge of +2muC ?

What would happen to immune system,if thymus gland is removed from the body of a person ?

The threshold wavelength of tungsten is 2.76 xx 10^-5 cm .What will be the maximum kinetic energy of electrons ejected if radiation of frequency 4 xx 10^15 Hz is made incident on the tungsten surface .

The photoelectric threshold wavelength of silver is 3250 xx 10^(-10) m . The velocity of the electron ejected from a silver surface by ultraviolet light of wavelength 2536 xx 10^(-10) m is (Given h = 4.14 xx 10^(6) ms^(-1) eVs and c = 3 xx 10^(8) ms^(-1))