Question

The source of electricity in a flash torch is its bulb.
(A) True
(B) False

Answer 1

Hint Electricity has an important place in modern society. It is a controllable and convenient form of energy for a variety of uses in homes, schools, hospitals, industries and so on. Conventionally, in an electric circuit the direction of electric current is taken as opposite to the direction of the electrons.

Complete step by step answer:
We are familiar with air current and water current. We know that flowing water constitutes water current in rivers. Similarly, if the electric charge flows through a conductor (for example, through a metallic wire). we say that there is an electric current in the conductor.
In a torch, we know that the cells (or a battery, when placed in proper order) provide flow of charges or an electric current through the torch bulb to glow.
We have also seen that the torch gives light only when its switch is on. What does a switch do? A switch makes a conducting link between the cell and
The bulb A continuous and closed path of an electric current is called an electric circuit. Now, if the circuit is broken anywhere (or the switch of the torch is turned off). the current stops flowing and the bulb does not glow.
So, it is the cell or battery that acts as a source of electricity and not a bulb. Bulb glows when electricity is passed through it.
Hence this statement is false. Bulb does not conduct electricity.

Note Electric current is expressed by the amount of charge flowing through a particular area in unit time. In other words, it is the rate of flow of electric charges. In circuits using metallic wires, electrons constitute the flow of charges.