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A positively charged disk is rotated clo...

A positively charged disk is rotated clockwise as shown in Fig. The direction of hte magnetic field at a point A in the plane of the disk is

A

Into the page

B

Out of the page

C

Up the page

D

Down the page

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-MOVING CHARGES AND MAGNETISM-EXERCISE-IA
  1. A wire carrying current I has the shape as shown in adjoining figure. ...

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

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

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

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

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

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

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

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  9. A magnetic dipole with magnetic moment M is placed at right angles to ...

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  10. Arrange the following in asending order of magnetic induction at a poi...

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  11. The magnetic field in a straight current carrying conductor wire is:

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  12. Statement (A) : Ampere's law states that the line integral of vecB.vec...

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  13. Which of the following graphs represent variation of magnetic field B ...

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  14. A current flows in a conductor from east to west. The direction of the...

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  15. The strength of magnetic field around an infinitely long current carry...

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  16. A vertical straight conductor carries a current vertically upwards. A ...

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  17. A current I flows along an inflinitely long straight thin walled tube....

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  18. The magnetic field due to a straight conductor of uniform cross sectio...

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  19. A current I(1) carrying wire AB is placed near another long wire CD ca...

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  20. Magnetic field at a distance a from long current carrying wire is prop...

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