Page 3 - HA

1. How are the iron fillings arranged at the centre of the circular loop?

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2. What is the direction of magnetic field at the centre of the circular loop?

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3. How does the strength of magnetic field change with the radius of the loop?

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4. Which rule is used to find out the polarities developed in a current carrying
circular loop?
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5. What happens to the strength of magnetic field when number of turns are
increased?

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