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A closely wound solenoid 80 cm long has ...

A closely wound solenoid 80 cm long has 4 layers of windings of 500 turns each. The diameter of the solenoid is 1.7 cm. If the current carried is 8.0 A, estimate the magnitude of B inside the solenoid near its centre.

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Magnetic field inside an extremely long current carrying solenoid is,
`B=mu_(0)nI`
`thereforeB=mu_(0)((Np)/l)I`
(Where p = no. of layers in a solenoid)
`thereforeB=((4pixx10^(-7))(400xx5)(8))/((0.8))`
`thereforeB=2.5xx10^(-2)T` (Parallel to axis of solenoid)
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KUMAR PRAKASHAN-MOVING CHARGES AND MAGNETISM-SECTION B (NUMERICAL FROM TEXTUAL EXERCISE)
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  2. Two long and parallel straight wires A and B carrying currents of 10.0...

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  3. A closely wound solenoid 80 cm long has 4 layers of windings of 500 tu...

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  5. Two moving coil meters M1 and M2 have the following particulars : ...

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  6. In a chamber, a uniform magnetic field of 6.5 G (1 G = 10^(-4) T) is m...

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  7. Obtain the frequency of revolution of the electron in its circular orb...

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  8. (a) A circular coil of 30 turns and radius 8.0 cm carrying a current o...

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  9. Two concentric circular coils X and Y of radii 16 cm and 10 cm, respec...

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  11. For a circular coil of radius R and N turns carrying current. Prove th...

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  13. A magnetic field that varies in magnitude from point to point but has ...

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  14. An electron emitted by a heated cathode and accelerated through a pote...

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  15. A magnetic field set up using Helmholtz coils (described in Exercise 4...

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  16. A straight horizontal conducting rod of length 0.45 m and mass 60 g is...

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  17. The wires which connect the battery of an automobile to its starting m...

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  18. A uniform magnetic field of 1.5 T exists in a cylindrical region of ra...

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  19. A long straight wire carries a current of 35 A. What is the magnitude ...

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  20. A circular coil of 20 turns and radius 10 cm is placed in a uniform ma...

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