Physics - Electrostatics Question with Solution | TestHub
As shown in the figure, MPQO represents a uniform electric field directed downward (the electric field exists only within this boundary), with an electric field strength of . ACB is a fixed smooth semicircular track with a radius R, and A, B are the endpoints of the track's horizontal diameter. AC is of a circle. A small sphere with mass m and charge -q is released from rest at point X, at a height H= R, sliding along the tangent line into the semicircular track without considering air resistance or any energy loss. The correct statements are:
Options:(select one or more)
Answer:
Solution:
Inside the field, ; hence .
(A) At C, : true.
(B) The acceleration direction changes along the arc: false.
(C) Increasing E opposes the motion; a suitable E makes : true.
(D) For , energy gives , not : false.
