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A cubical region of space is filled with...

A cubical region of space is filled with some uniform electric and magnetic field. An electron enters the cube across one of its faces with velocity v and a positron enters via opposite face with velocity- v. At this instant, which one of the following is not correct?

A

the electric forces on both the particles cause identical accelerations

B

the magnetic forces on both the particles cause equal accelerations

C

both particles do not gain or loose energy at same rate

D

the motion of the centre of mass (CM) is determined by both B and E.

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The correct Answer is:
B
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AAKASH SERIES-MOVING CHARGES AND MAGNETISM-EXERCISE-IA
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  7. An uncharged particle is moving with a velocity of vecv in non - unifo...

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  14. A particle having charge q moves with a velocity v through a region in...

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  15. A charged particle moves through a magnetic field in a direction perpe...

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  16. An electron moves in a circular orbit with a uniform speed v. it produ...

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  17. When a charged particle moving with velocity vec v is subjected to a m...

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  18. A beam of electrons passes undeflected through uniformly perpendicul...

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