Which of the following units represents the largest amount of energy (a) Electron volt (b) Erg (c) Joule (d) Calorie
Hint: Electron volt, erg, joule and calorie all are the units of energy. Convert electron-volt, erg and calorie to joule and find out which of the following has the highest value. Thus, the highest value is 4.18 joule. Thus, the unit that represents the largest amount of energy is calorie.