मराठी

The bulb does not glow in the setup shown in figure list the possible reasons. Explain your answer. - Science

Advertisements
Advertisements

प्रश्न

The bulb does not glow in the setup shown in figure list the possible reasons. Explain your answer.

लघु उत्तर

उत्तर

The bulb may not glow because of the following reasons:

  1. The liquid in the beaker is non-conducting. In such a case, the electric current would not be able to pass through the liquid. Hence, the circuit is not complete.
  2. The electric current in the circuit is very weak. This can happen if the material used for making the circuit is not a good conductor of electricity or if the battery does not have sufficient energy to generate electricity.
shaalaa.com
Conductor of Electricity: Liquid
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 14: Chemical Effects of Electric Current - Exercises [पृष्ठ १८१]

APPEARS IN

एनसीईआरटी Science [English] Class 8
पाठ 14 Chemical Effects of Electric Current
Exercises | Q 4 | पृष्ठ १८१

संबंधित प्रश्‍न

When the free ends of a tester are dipped into a solution, the magnetic needle shows deflection. Can you explain the reason?


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 ______.


Does pure water conduct electricity? If not, what can we do to make it conducting?


In case of a fire, before the firemen use the water hoses, they shut off the main electrical supply for the area. Explain why they do this.


A child staying in a coastal region tests the drinking water and also the seawater with his tester. He finds that the compass needle deflects more in the case of seawater. Can you explain the reason?


Is it safe for the electrician to carry out electrical repairs outdoors during heavy downpour? Explain.


Paheli had heard that rainwater is as good as distilled water. So, she collected some rain water in a clean glass tumbler and tested it using a tester. To her surprise, she found that the compass needle showed deflection. What could be the reasons?


Which one of the following solutions will not conduct electricity?


Observe the circuit given in the figure.

Boojho set up this circuit for purification of copper. What will be the nature of – (a) plate A (b) plate B (c) and the solution.

Explain the process of purification.


Observe the following circuit given in the figure.

Current does not flow in the circuit, if there is a gap between the two wires. Does it indicate that air is a poor conductor of electricity? Does air never conduct electricity? Explain.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×