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In the following hexagons made up of two...

In the following hexagons made up of two different `P` and `Q` current enters and leaves from points `X` and `Y` respectively In which case the magnetic field at its centre is not zero .

A

B

C

D

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The correct Answer is:
A
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MOTION-MAGNETISM -EXERCISE-2 (Level-I)
  1. In the following hexagons made up of two different P and Q current ent...

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  2. Three rings, each having equal radius R, are placed mutually perpendic...

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  3. Magnetic monopoles cannot exist -

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  4. Figure shows a straight wire of length l carrying a current i. Find th...

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  5. Find the ratio of magnetic field magnitudes at a distance 10 m along t...

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  6. Two long parallel wire A and B situated perpendicuilar to the plan...

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  7. Two mutually perpendicular conductors carrying currents I(1) and I(2) ...

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  8. Current flows through uniform square frames as shown. In which case is...

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  9. A long cylindrical conductor of radius R carries I as shown. The curre...

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  10. An infinite long solenoid having n turns per unit length is shown in f...

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  11. Calculate the magnetic moment of a thin wire with a current I=0.8 A, w...

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  12. Consider a long cylindrical shell of non-conducting material which car...

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  13. A long straight wire carries a current of 10A directed along the negat...

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  14. A uniform current density j flows inside an infinity plate of thickne...

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  15. A long thin walled pipe of radius R carries a current I along its leng...

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  16. A long straight metal rod has a very long hole of radius a drilled par...

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  17. A long cylidrical conductor of radius R carries a current i as shown i...

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  18. Eight wires cut the page perpendicularly at the points show in figure....

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  19. Let B(P),B(Q)andB(R) be the magnetic field produced by the three infin...

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  20. A charge praticule of sepeific charge (charge/ mass ) alpha is rea...

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