NEET Physics: Electric Charge questions with solutions

Q1. The important conclusion given by Millikan's experiment about the charge is

1. Charge is never quantised
2. Charge has no definite value
3. Charge is quantised
4. Charge on an oil drop always increases

Answer: Charge is quantised

Millikan’s oil-drop experiment showed that measured charges on droplets were not random values; they were integer multiples of a smallest charge. This established that electric charge is quantised.