Question

explain the structure of a torch

Answer 1

Answer:

A torch is made up of a cylindrical or cuboidal casing. The casing can be metallic or non-metallic. The cells are kept inside the casing. The bottom of the casing has a spring which is attached to the metallic wire. The spring helps in keeping the cells snugly fit in place. The metallic wire is attached to a switch. The switch is then attached to the negative terminal of the holder. The positive end of the holder touches the positive terminal of the cell at top. The bulb fits inside the holder.

Conductors: Materials which allow electric current to pass through them are called conductors. All metals are good conductors of electricity.

Insulators: Materials which do not allow electric current to pass through them are called insulators. Most of the non-metals are insulators, e.g. asbestos, rubber, wood, etc.

Answer 2

Answer:

A torch is a practical example of a simple electric circuit. It is an electric device that emits light. It consists of a bulb, electric cells, a switch, a reflector, and a cylindrical shape casing. ... Casing: The casing is used to provide covering for the basic components of the torch for protection and safe handling.