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A particle moves in a region having a un...

A particle moves in a region having a uniform magnetic field and a parallel, uniform electric field. At some instant, the velocity of the particle is perpendicular to the field direction. The path of the particle will be

A

a straight line

B

a circle

C

a helix with uniform pitch

D

a helix with nounifom pitch

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The correct Answer is:
D
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AAKASH SERIES-MOVING CHARGES AND MAGNETISM-EXERCISE-IA
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  2. A particle having a mass of 10^(-2) kg carries a charge of 5xx10^(-8)C...

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  3. A particle moves in a region having a uniform magnetic field and a par...

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  4. A uniform electric field and unifrom magnetic field cting along the sa...

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  5. An alternate electric field of frequency v, is applied across the dees...

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  6. when a proton is released from rest in a room, it starts with an initi...

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  7. A charged particle is released from rest in a region of steady and uni...

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  8. An electron falling freely under gravity entersa region of uniform hor...

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  9. A proton a deuteron and an alpha - particle having the same kinetic en...

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  10. A particle is projected in a plane perpendicular to a uniform magnetic...

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  11. When a positively charged particle enters a uniform magnetic field wit...

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  12. A charged particle goes undeflected in a region containing electric a...

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  13. A charged particle describes a circle under the influence of the magne...

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  14. A charged particle is projected perpendicular to uniform magnetic fiel...

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  15. Magnetic induction at a point due to a small element of current carryi...

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  16. Statement A : current is scalar Statement B : current element is vec...

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  17. A circular coil carrying current behaves as a

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  18. The current through a circular coil appears to be flowing in clock-wis...

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  19. A long wire carrying a steady current is bent into a circular loop of ...

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  20. A current carrying coil is placed with its plane in the magnetic merid...

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