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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

`ox`(into the page)

B

`3//4 to`

C

` larr3//4`

D

`odot` (out of the page)

Text Solution

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The correct Answer is:
D
(d) For a circular wire
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CENGAGE PHYSICS-SOURCES OF MAGNETIC FIELD-Exercise (single Correct )
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  2. Consider six wires coming into or out of the page, all with the same c...

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

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  4. Figure. Shows two long wires carrying equal currents I1 and I2 flowing...

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  5. In the figures given show four different sets of wires that cross each...

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  6. Four parallel conductors, carrying equal currents, pass vertically thr...

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  7. An infinitely long wire carrying current I is along Y-axis such taht i...

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  8. A steady current is set up in a cubic network composed of wires of equ...

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  9. A point charge is moving in clockwise direction in a circle with const...

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  10. An alpha is moving along a circle of radius R with a constant angular ...

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  11. Three infinite current carrying conductors are placed as shown in Fig....

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  12. An equilateral triangular loop is kept near to a current carrying long...

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  13. A particle is moving with velocity vecv=hati+3hatj and it produces an ...

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  14. A parallel plate capacitor is moving with a velocity of 25 ms^-1 throu...

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  16. In Fig ABCDEFA was a square loop of side l, but is folded in two equal...

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  17. If the magnetic field at P can be written as K tan (alpha/2),

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  18. The magnetic field at the origin due to the current flowing in the wir...

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  19. Two infinitely long linear conductors are arranged perpendicular to ea...

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  20. Figure shows an Amperian path ABCDA. Part ABC is in vertical plane PST...

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