Electric Charges And Fields
Very Short Q and A
Q1: Define frictional electricity.
Answer: It is the electricity developed on bodies when they rubbed against each other.
Q2: What is the smallest amount of charge?
Answer: Charge on an electron or proton is ± 1.62 × 10
-19 C
Q3: State the two basic properties of electric charge?
Answer: i. Electric charge is quantised.
ii. Electric charge is always conserved.
Q4: Define Dielectric constant.
Answer: The Dielectric constant of a medium is the ratio of the force between two charges placed at a certain distance apart in vacuum(or air) to the force between the same two charges at the same distance apart in that medium.
Q5: What is induction?
Answer: It is a process of charging a body without making physical contact.