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Moving Charges and Magnetism question

2013 · Q126
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Moving Charges and Magnetism question

2013 · Q126

NEETPhysicsMoving Charges and MagnetismMCQ+4 / −1
When a proton is released from rest in a room, it starts with an initial acceleration aaa0 towards west. When it is projected towards north with a speed vvv0 it moves with an initial acceleration 3aaa0 towards west. The an initial accelearation 3a0 towards west. The an initial acceleration 3aaa0 toward west. The electric and magnetic fields in the room are
  1. A
    ma0e{{m{a_0}} \over e}ema0​​ east,  3ma0ev0{{3m{a_0}} \over {e{v_0}}}ev0​3ma0​​ up
  2. B
    ma0e{{m{a_0}} \over e}ema0​​ east,  3ma0ev0{{3m{a_0}} \over {e{v_0}}}ev0​3ma0​​ down
  3. C
    ma0e{{m{a_0}} \over e}ema0​​ west,  2ma0ev0{{2m{a_0}} \over {e{v_0}}}ev0​2ma0​​ up
  4. D
    ma0e{{m{a_0}} \over e}ema0​​ west,  2ma0ev0{{2m{a_0}} \over {e{v_0}}}ev0​2ma0​​ down
View written solutionFree

Correct answer: D

NEET 2013 Physics - Moving Charges and Magnetism Question 65 English Explanation

When moves with an acceleration a0 towards west, electric field

E=Fq=ma0e(West)E = {F \over q} = {{m{a_0}} \over e}\left( {West} \right)E=qF​=ema0​​(West)

When moves with an acceleration 3a0 towards east, magnetic field

B=2ma0ev0(downward)B = {{2m{a_0}} \over {e{v_0}}}\left( {downward} \right)B=ev0​2ma0​​(downward)

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