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A current of I amperes is flowing throug...

A current of I amperes is flowing through each of the bent wires as shown. Find the magnitude of magnetic field at O.

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`B(theta)=(mu_(0)I)/(4piR)theta`
`B_("net")=(mu_(0)I)/(4pi)[(pi//2)/R+(3pi//2)/(R^(1))]=(mu_(0)I)/8[1/R+3/(R^(1))]`
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AAKASH SERIES-MOVING CHARGES AND MAGNETISM-EXERCISE-III
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  8. A parabolic section of wire, as shown in figure is located in the X-Y ...

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  9. A semi circular current loop is placed in an uniform magnetic field of...

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  10. A straight wire of length 30 cm and mass 60 mg lies in a direction 30^...

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  11. A thin flexible wire of length L is connected to two adjacent fixed po...

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  12. The ratio of the magnetic field at the centre of a current carrying ci...

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  13. Two wires A and B are of lengths 40 cm and 30 cm. A is bent into a cir...

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  14. A circular coil of radius 2R is carrying current 'i' . The ratio of ma...

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  15. The magnetic field due to a current carrying circular loop of radius ...

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  16. A particle of charge q and mass m moves in a circular orbit of radius ...

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  17. The field due to a wire of n turns and radius r which carries a curren...

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  18. A charge Q is uniformly distributed over the surgace of non conducting...

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  19. Two circular coils are made from a uniform copper wire. Radii of circu...

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  20. A straight wire is first bent into a circle of radius 'r' and then int...

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  21. A long straight wire carrying current of 30 A is placed in an exte...

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