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The magnetic field B inside a long solen...

The magnetic field B inside a long solenoid, carrying a current of 5.00 A, is `(3.14 xx 10^-2)` T. Find the number of turns per unit length of the solenoid.

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We know that
`B= mu_oni`
`3.14xx10^(-2) = 4pixx10^(-7)xxnxx5`
`rArr n= (10^(-2))/(20xx10^(-7)`
`=5xx10^3 = 5000 turns//m.`
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HC VERMA-MAGNETIC FIELD DUE TO CURRENT-Exercises
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  2. A circular loop of radius r carries a current i. How should a long , ...

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  8. A long, cylindrical wire of radius b carries a current i distributed u...

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  9. A solid wire of radius 10 cm carries a current of 5.0 A distributed un...

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  10. Sometimes we show an idealised magnetic field which is uniform in a gi...

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  12. Consider the situation of the previous problem. A particle having char...

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  13. The magnetic field B inside a long solenoid, carrying a current of 5.0...

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  14. A long solenoid is fabricated by closely winding a wire of radius 0.5 ...

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  15. A copper wire having resistance 0.01 ohm in each metre is used to wind...

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  16. A tightly- wound solenoid of radius a and length l has n turns per uni...

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  17. A tightly- wound , long solenoid carries a current of 2.00 A. An elect...

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  18. A tightly-wound, long solenoid has n turns per unit length, a radius r...

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  19. A tightly- wound, long solenoid is kept with its axis parallel to a la...

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  20. A capacitor of capacitance 100 mu F is connected to a battery of 20 vo...

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