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When a positively charged particle enter...

When a positively charged particle enters a uniform magnetic field with uniform velocity, its trajectory can be (i) a straight line (ii) a circle (iii) a helix.

A

a only

B

a or b

C

a or c

D

any one of a, b and c

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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 is projected in a plane perpendicular to a uniform magnetic...

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

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

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

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

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

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

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  9. A circular coil carrying current behaves as a

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

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

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

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  13. The magnetic dipole moment of current loop is independent of

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  14. The magnetic field at the centre of the current carrying coil is

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  15. A circular coil of radius r having number of turns n and carrying a cu...

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

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

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  18. In a cyclotron, a charged particle

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

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

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