There is a uniform electric field of strength 10^3 Vm ⁻¹ along Y -axis. A body of mass 1 ~g and charge 10⁻⁶ C is projected into the field from origin along the positive X -axis with a velocity 10 ~ms ⁻¹ . Its speed in ms ⁻¹ after 10 ~s is (

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There is a uniform electric field of strength 10^3 Vm ⁻¹ along Y -axis. A body of mass 1 ~g and charge 10⁻⁶ C is projected into the field from origin along the positive X -axis with a velocity 10 ~ms ⁻¹ . Its speed in ms ⁻¹ after 10 ~s is (Neglect gravitation)

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Correct answer: A. 10

E =10^2 ~V / m (aloeg Y -axis) m =1 ~g =1 10⁻² ~kg q =10⁻⁶ C , v=10 ~m / s The charged body is moving perpendicularly to the direction of electric field, so no forte acts on ir, so the velocity of the body remains same.

There is a uniform electric field of strength 10^3 Vm ⁻¹ along Y -axis. A body of mass 1 ~g and charge 10⁻⁶ C is projected into the field from origin along the positive X -axis with a velocity 10 ~ms ⁻¹ . Its speed in ms ⁻¹ after 10 ~s is (Neglect gravitation)

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