(a) (2 MARKS) If the Coulomb's Law in scalar form is expressed as F=k \frac{q_{1 . q_{2}}}{r^{2}} where, q1 and q2 are magnitudes of charges on two objects,r is the

distance between the objects measured centre-to-centre, F is the magnitude of electrostatic force exerted by charges on each other, and k is the constant of proportionality. If all the physical quantities are measured in the SI units, then the units of constant of proportionality k are m?N?C?. True or False? (b) (2 MARKS) Derive the magnitude of Faraday's constant, which is equal to the charge of 1mole of electrons. approximate to the nearest integer) (c) (1 MARK) True or False? - Similar to the gravitational force, the electrostatic force can only be attractive.