Question

JIWO Vials. Wneral)
(i)Estimate charge on all the electrons in a 10 g Cu penny.
(ii) Estimate the number of electrons in 1 g of water and find charge on
them.
(iii)A polythene piece is rubbed with wool and is found to have a negati
charge 3.6 x 107C. Calculate the number of extra electrons on the
polythene piece.
(iv)Which is bigger, a coulomb or charge on an electron? how many
electronic charge from one coulomb of charge?
(v)Find the electrostatic force between two protons placed in free space
separated by a distance of 20 cm.
(vi)A pith ball A, having mass 9 x 105 kg carries a charge of 45 uC. What
must be the magnitude and sign of he charge on a pith ball B held 2 cm
directly above the pith ball A such that the pith ball A remains stationary
(vii)Two electrons are placed, one at north pole and other at south pole
earth Find the​

Answer 1

Answer:

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