A negatively charged body is connected to the ground, then choose the correct statement. (A) Electrons flow from body to ground. (B) It becomes positively charged. (1) Only A is true (2) Only B is true (3) Both \(\mathrm{A}\) and \(\mathrm{B}\) are true (4) Both \(\mathrm{A}\) and \(\mathrm{B}\) are false

To grasp the concept of electric charge, imagine it as an intrinsic property of particles that causes them to experience a force when placed in an electromagnetic field. There are two types of electric charges: positive and negative. Like charges repel each other while opposite charges attract.

Materials can become charged in several ways, one of which is through the transfer of electrons. When a material gains electrons, it becomes negatively charged, and when it loses electrons, it becomes positively charged. In the context of the exercise, a negatively charged body implies that it has an excess of electrons in comparison to protons, which are positively charged particles.

Understanding electric charge is crucial as it sets the foundation for concepts like electron flow and electrical grounding, integral for electricity and electronics. The behavior of electric charges explains the workings of various phenomena such as electricity, magnetism, and even the chemical bonding between atoms.

Electron flow is essentially what we refer to as electricity. It is the movement of electrons from one point to another, often through a conducting material like metal. Electrons usually flow from the negative terminal to the positive terminal of a power source.

In our daily lives, electron flow powers everything from light bulbs to computers. It's crucial to remember that the electron flow is what generates the electric current — a stream of charged particles moving through a conductor. The rate at which these electrons move is known as the current and is measured in amperes.

In the exercise provided, when the negatively charged body connects to the ground, electrons will flow from the body to the ground. This flow occurs until the body reaches electrical neutrality. This electron flow is the primary mechanism through which the body sheds its excess negative charge.

Electrical grounding, often simply referred to as 'grounding,' is a safety measure used extensively in electrical systems to prevent unwanted buildup of charge and to provide a path for current to safely flow back to the ground in case of a fault.

Grounding serves a dual purpose: it protects people from electric shocks and electrical devices from damage. It essentially 'neutralizes' a charged object by allowing the excess charge to dissipate into the Earth, which acts as a vast reservoir of charge that can absorb or supply electrons freely.

In the exercise we're discussing, the grounding process means connecting the negatively charged body to the Earth. This connection allows excess electrons to leave the body and enter the ground, resulting in a neutral body. The grounded body cannot become positively charged unless an external source provides additional positive charge or strips away more electrons. Therefore, grounding is integral to maintaining the safe operation of electronic systems and understanding how charge imbalances are corrected in practical applications.