Imagine that you are sitting in a chamber with your back to one wall an
electron beam moving horizontally from back wall towards the front wall, is
reflected by a strong magnetic field to your right side
a) What is the direction of magnetic field ?
b) Which rule is applicable for this? Define.
Or
What is the function of earth wire, why is it necessary to earthling
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function of earth wire is to transport he current to the earth which accidentally goes to the metallic part which can cause electric shock
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