9. 1 Coulomb = ________ Electro Static Unit. a) 3*109 b) 3*108 c) 1.602*10-19 d) 2*109
Answer: a Explanation: 1 Coulomb means 3*109Electro Static Unit of charge. Coulomb and ESU are two different units of charge and their conversion formula is necessary. Coulomb is the unit of charge in the SI system and esu is the unit of charge in the CGS system.
option A: 3*109
