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Chapter 11

Chemical Effects of Electric Current

Science•Class 8•CBSE

17 Questions Available

Showing 17 questions on this page

Does water conduct electricity? Show with the help of an activity. OR Show the conductivity of water with the help of an activity.

26 views0 helpful

What do you mean by magnetic effect of current?

23 views0 helpful

On what factors thickness of the electroplated items depend?

20 views0 helpful

What do you mean by chemical effect of current?

19 views0 helpful

Explain the functioning of a LED.

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Describe an electrical tester.

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In some situation even, liquid is allowing the electric current to pass but, bulb does not glow. Why so?

15 views0 helpful

What are the two types of electricity on the basis of charge?

14 views0 helpful

How can we check whether a tester is working or not?

13 views0 helpful

What is electroplating? On which effect of the electric current is it based? Why is it done?

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Is it possible for an electric tester to detect weak current also, if no how can we detect weak current flowing in a circuit?

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Why the filament of bulb does not get heated sometimes in a circuit?

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Differentiate between good conductors and bad conductors of electricity.

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What do you mean by heating effect of current?

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Why materials classified as poor conductors, also allow electricity to pass under certain conditions?

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How can you test whether lemon juice is good conductor or poor conductor of electricity?

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Differentiate between good conductors and bad conductors of electricity.

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Chemical Effects of Electric Current

Does water conduct electricity? Show with the help of an activity. OR Show the conductivity of water with the help of an activity.

What do you mean by magnetic effect of current?

On what factors thickness of the electroplated items depend?

What do you mean by chemical effect of current?

Explain the functioning of a LED.

Describe an electrical tester.

In some situation even, liquid is allowing the electric current to pass but, bulb does not glow. Why so?

What are the two types of electricity on the basis of charge?

How can we check whether a tester is working or not?

What is electroplating? On which effect of the electric current is it based? Why is it done?

Is it possible for an electric tester to detect weak current also, if no how can we detect weak current flowing in a circuit?

Why the filament of bulb does not get heated sometimes in a circuit?

Differentiate between good conductors and bad conductors of electricity.

What do you mean by heating effect of current?

Why materials classified as poor conductors, also allow electricity to pass under certain conditions?

How can you test whether lemon juice is good conductor or poor conductor of electricity?

Differentiate between good conductors and bad conductors of electricity.