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A length of wire carries a steady curren...

A length of wire carries a steady current. It is first bent to form a circular coil of one turn. The same length is now bent more sharply to give a loop of two turns of smaller radius. The magentic field at the centre caused by the same current now will be

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MOTION-MAGNETISM -EXERCISE-3 (Level-I)
  1. A length of wire carries a steady current. It is first bent to form a ...

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  2. A straight conductor is split into indentical semicircular turns by te...

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  3. A current of 1A is flowing in the sides of equilateral triangle of sid...

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  4. A long wire is bent into a circular loop and long straight wires. On o...

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  5. Find the magnetic induction at the centre of a rectangular frame of wi...

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  6. Two identical coils carrying same current have common centre but have ...

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  7. Two circular loops of equal radii are placed, one vertically and other...

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  8. The magnetic induction of the field at the point O of a loop with curr...

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  9. Two Concentric circular coils X and Y of radii 16 cm and 10cm lie in ...

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  10. Two circular coils of wire each having a radius of 4cm and 10 turns ha...

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  11. A direct current is passing through a wire. It is bent to form a coil ...

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  12. A current of I ampere is flowing through each of the bent wires as sho...

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  13. The wire loop PQRSP formed by joining two semicircular wires of radii ...

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  14. A current carrying wire is placed in the grooves of an insulating semi...

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  15. A pair of stationary and infinitely long bent wires is placed in the X...

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  16. Figures shows a long wire bent at the middle to form a right angle. Th...

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  17. Six wires of current I(1) =1A,I(2) =2A, I(3) =3A, I(4)= 1A, I(5) =5A a...

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  18. A system of long four parallel conductors whose sections with the plan...

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  19. Two circular coils of wire each having a radius of 4cm and 10 turns ha...

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  20. Find the magnitude of the magnetic induction B of a magnetic field gen...

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