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Show that the kinetic energy of the part...

Show that the kinetic energy of the particle moving in a magnetic field remains constant

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It will remain same, because the work done is zero for a charged particle moving in magnetic field as magnetic force is perpendicular to the motion of particle.
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MODERN PUBLICATION-MOVING CHARGES AND MAGNETISM-Revision Exercises (Very Short Answer Questions )
  1. State the principle of moving coil galvanometer.

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  2. What is the magnetic force experienced by a charged particle if veloci...

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  3. Show that the kinetic energy of the particle moving in a magnetic fiel...

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  4. Why are pole pieces of galvanometer made concave?

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  5. What will be the path of a charged particle moving perpendicular to a ...

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  6. A neutron enters a magnetic field region, normally to the direction of...

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  7. A porton and an electron travelling along parallel paths entre a reg...

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  8. Which on the following will describe the smallest circle when projecte...

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  9. What do you mean by crossed fields?

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  10. What is cyclotron frequency? Is it possible for a cyclotron to acceler...

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  11. A deuteron and an alpha particle having same momentum are in turn allo...

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  12. A deutron and a proton are accelerated by the cyclotron. Can both be a...

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  13. An alpha-"particle" and a proton of the same kinetic energy are in tur...

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  14. Derive an expression for the force acting on a current carrying conduc...

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  15. (a) An iron ring of relative permeability mu(r) has windings of insul...

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  16. An electron beam projected along + X-axis, experience a force due to a...

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  17. Find the magnetic field induction at a point on the axis of a circular...

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  18. In a magnetic field the curvature of the path of a beta-particle is gr...

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  19. What do yo understand by magnetic dipole moment of the current loop.

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  20. Find the force between two parallel conductors carrying currents (i) i...

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