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A copper rod which is 1 centimetre in diameter carries a current of 5 amps.
The current is distributed uniformly over the rod.
The magnetic field half way among the axis of the rod and its outside edge is:
Ans - Circles the axis of the rod
Using a wheel and axle Use the pencil sharpener that you used in experiment A 8. Pull on the end of the string that held the books and observe how rapidly the crank turns.
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It is based on the principle that conductivity of a semiconductor enhances with increase in the intensity of incident light. In this, a thin layer of some semiconductor (as
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