You are using a tester with a light bulb to conduct an experiment to find out if a liquid is a conductor of electricity. But you observe that one of the liquids which are supposed to be a conductor according to your textbook is not causing the light bulb to glow, even though you have checked that all the connections are fine, and the battery and bulb are in working condition. What could be the possible reason for this?

Open in App

Solution

Step 1: Electric conductor
An electric conductor is an object or type of material that allows an electric charge to flow in one or more directions.
Step 2: Possible reason for not glowing the bulb
The filament of an electric light bulb glows due to the heating effect of an electric current. When current flows through the bulb, the filament heats up to a high temperature which increases the kinetic energy of electrons in the filament and they start striking the inner wall of the bulb and it glows.
If the current is too low, the filament may not be heated enough to glow.

Suggest Corrections

Similar questions

Question 5
A tester is used to check the conduction of electricity through two liquids, labelled A and B. It is found that the bulb of the tester glows brightly for liquid A while it glows very dimly for liquid B. You would conclude that
(i) liquid A is a better conductor than liquid B.
(ii) liquid B is a better conductor than liquid A.
(iii) both liquids are equally conducting.
(iv) conducting properties of liquid cannot be compared in this manner.

Q. In an electric circuit, a battery and a bulb have been connected and the battery consists of two cells of equal potential difference. If the bulb is not glowing, then which tests will you perform in order to find out the reason for the bulb not glowing?

Q. In an electric circuit, a battery and a bulb have been connected and the battery consists of two cells of equal potential difference. If the bulb is not glowing, then which test will you perform in order to find out the reason for the bulb not glowing?

You are using a tester with a light bulb to conduct an experiment to find out if a liquid is a conductor of electricity. But you observe that one of the liquids which is supposed to be a conductor according to your textbook is not causing the light bulb to glow, even though you have checked that all the connections are fine, and the battery and bulb are in working condition. What could be the possible reason for this?

A tester is made with the two terminals of a battery connected to separatewires, each with one end free. A light bulb is also a part of the circuit. Now an object is used to connect the free ends, and it is observed that the light bulb does not glow. (In other words, there is no electricity flowing) Which of the following could be that object?

Join BYJU'S Learning Program