Q. 74.0( 4 Votes )

A proton and an electron are placed in a uniform electric field.
A. The electric forces acting on them will be equal.

B. The magnitudes of the forces will be equal.

C. Their accelerations will be equal.

D. The magnitudes of their accelerations will be equal

Answer :


Let the force on the electron and proton is Fe (F) and Fp (F’) respectively.


Then,



Option (a) is incorrect as the forces are equal only in magnitude but not in direction.


Option(b) is correct as magnitude of the forces are equal.


Option (c) is incorrect as the magnitude of accelerations for both particles is not equal and also the direction is also not the same.


Option (d) is incorrect as the magnitude of acceleration of both will be different as the masses of both are different.

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