Question

What are the kinds of charges?
A. Positive
B. Negative
C. Both A and B
D. None

Answer 1

Hint: Charge is a property of the body. It comes under frictional electricity. Losing excess electrons leads to positive charge. To understand this concept, you can take an experiment in your day to day life ex. Amber or lodestone. Donors will be positive and acceptors will be negative.

Complete Step-by-Step solution:
It is well known that each substance is made up of atoms. There is a nucleus at the centre of each atom, in which there are positively charged protons and uncharged neutrons. The negatively charged electrons revolve around the nucleus in various orbits. An electron gas, a negative charge equal to the positive on a proton. Hence, the atom as a whole is electrically neutral.
When two substances rub together, the electrons from one substance in which electrons are less bound in comparison others move to the other substance. Thus one substance due to loss of electron becomes electron deficient and another due to gain of electron, becomes excess with electrons. Hence there are types of charges, negative and positive.
For ex. When a glass rod is rubbed with silk, the electron moves from the glass rod to the silk due to which the glass rod becomes or fairly called positively charged and the silk on gain of the electron becomes negatively charged. Similarly, when an ebonite rod rubbed fur, the electron moved from the fur to the ebonite rod .As a result ,the ebonite rod due to gain of electron become negatively charged and the fur due to loss of electrons become positively charged. Such elementary facts of electricity i.e, existence of electric charge and the electrical constitution of matter, make the readers for in depth study.
Correct option is C.

Note: Electric charge will neither be created nor be destroyed but it can be transferred from one part of a substance or system to another part of the substance. So in an isolated system, the total charge of an isolated system remains constant.