36.
a)
What are the reasons for overloading in an electric circuit ? Earthing
is necessary for the appliances with metallic body. Why?
b)
Explain the method of preparing electromagnet. How do you test the
poles of an electromagnet with the help of magnetic compass ?
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Answer:
a) Overloading is couse due to the connections of large amount of devises in a same connection.
Earthing is necessary because it ended the chance of electrical shock
b) electro magnet is prepared by passing current in a conductor.
In on putting the compass at one pole,if neadle get deflected then it will be north
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