CENTRAL PROBLEMS OF AN ECONOMY AND THEIR SOLUTIONS ‘Economy’ refers to the nature and level of economic activities in an area, which may be a village, a city, a town, a district, a state...
1. The system of units: A set of fundamental and derived units is called system of units. 2. Ampere: One ampere is the unit of current equal to a flow of one coulomb per second. 3. Mole: The gram atomic...