PHYSICS [2 Mark Question Answer]

Electrostatic charge is obtained. When the ebonite rod is rubbed with wool or fur, the wool or the fur loses electrons to the rod because the electrons in the outermost orbit in case of fur are loosely bound as compared to those in the rod. now the ebonite rod has an excess of electrons, so it becomes negatively charged while the wool or fur has a deficiency of electrons, so it acquires a positively charged.

Example of Conductor : Hydrochloric acid, copper, aluminium, gold, and silver
Example of Insulator : Mica, glass, air, plastic, rubber, and wood

An ebonite rod is rubbed with fur, the electrons are transferred from fur to ebonite rod. Ebonite has an excess of electrons is negatively charged and fur due to a deficit of the same number of electrons gets a positive charge.

EARTHING OF THE APPLIANCE: To protect from the electric shock electric appliance is earthed. Sometimes due to break of insulation of wires, the live wire comes in contact with the body of the appliance and we get a fatal shock when the appliance is touched. If the appliance is earthed, the current will pass to the earth and we remain protected from the electric shock.

In the household electric circuit, the appliances are connected in parallel and each appliance has an independent path for current and works at the same voltage. Hence, if one bulb in a room is fused, the other bulbs keep glowing.