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Biot-Savart law indicates that the movin...

Biot-Savart law indicates that the moving electrons `("velocity" vec(v))` produce a magnetic field `vec(B)` such that

A

`Bbotv`

B

`Babs()v`

C

it obeys inverse cube law

D

it is along the line joining the electron and point of observation

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A
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AAKASH SERIES-MOVING CHARGES AND MAGNETISM-EXERCISE-IA
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  2. A circular coil of radius r having number of turns n and carrying a cu...

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  3. Biot-Savart law indicates that the moving electrons ("velocity" vec(v)...

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  4. An electron is projected with uniform velocity along the axis of a cur...

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  5. In a cyclotron, a charged particle

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  6. The gyro-magnetic ratio of an electron in an H-atom, according to Boh ...

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  7. A current carrying coil is subjected to a uniform magnetic field. The ...

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  8. Energy in a current carrying coils is stored in the form of (a) elec...

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  9. The magnetic field dB due to a small element at a distance r and carry...

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  10. A current loop consists of two identical semicircular parts each of ra...

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  11. Two similar coils of radius R are lying concentrically with their plan...

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  12. An electron moving in a circular orbit of radius r makes n rotations p...

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  13. A wire carrying current I has the shape as shown in adjoining figure. ...

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  14. A circular loop of radius R, carrying current I, lies in x-y plane wit...

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  15. A positively charged disk is rotated clockwise as shown in Fig. The di...

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  16. A proton of mass m and charge q enters a magnetic field B with a veloc...

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  17. The correct curve between the magnetic induction (B) along the axis of...

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  18. Which of the following particle will have minimum frequency of revolut...

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  19. An insulating rod of length I carries a charge q distrubuted uniformly...

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  20. Two similar coaxial coils, separated by some distance, carry the same ...

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