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What are the advantages and disadvantages of electroplating?
Does water conduct electricity? Show with the help of an activity.
OR
Show the conductivity of water with the help of an activity.
How can you test whether lemon juice is good conductor or poor conductor of electricity?
What do you mean by chemical effect of current?
Why the filament of bulb does not get heated sometimes in a circuit?
How can we check whether a tester is working or not?
Differentiate between good conductors and bad conductors of electricity.
On what factors thickness of the electroplated items depend?
In some situation even, liquid is allowing the electric current to pass but, bulb does not glow. Why so?
What is electroplating? On which effect of the electric current is it based? Why is it done?
What do you mean by magnetic effect of current?
What do you mean by heating effect of current?
Describe an electrical tester.
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 materials classified as poor conductors, also allow electricity to pass under certain conditions?
What are the two types of electricity on the basis of charge?
Explain the functioning of a LED.