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A circular coil of 30 turns and radius 8...

A circular coil of 30 turns and radius 8.0 cm carrying a current of 6.0 A is suspended vertically in a uniform horizontal magnetic field of magnitude 1.0 T. The field lines make an angle of `60^@` with the normal of the coil. Calculate the magnitude of the counter torque that must be applied to prevent the coil from turning.

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MODERN PUBLICATION-FORCE ON A CURRENT-EXERCISE
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  2. A circular coil of 100 turns radius 10cm, carries a current of 5A. It ...

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  3. A circular coil of 30 turns and radius 8.0 cm carrying a current of 6....

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  4. A circular coil of 25 turns and radius of 12 cm is placed in a uniform...

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  8. In an exercise to increase current sensitivity by 25% , its resistane ...

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  10. A resistance of 900 ohm is connected in series with a galvanometer of ...

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  12. Resistance of a galvanometer is 25 ohm it can carry a current of 0.5 m...

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  13. It is intended to measure a maximum urrent of 25A with an ammeter of r...

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  14. A galanometer has a resistance of 10 ohm. It gives maximum deflection ...

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  15. The coil of a galvanometer has a resistance 100 ohm . It gives full sc...

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  16. A galvanometer of resistance 80 ohm gives full scale deflection for a ...

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  17. How will you convert a 1.0 mA full scale deflection meter of resistanc...

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  18. A galvanometer with a coil of resistance 12.0 ohm shows full scale def...

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  19. A galvanometer with a coil of resistance 12.0 ohm shows full scale def...

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