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JEE PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES
1
Medium
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Analyzing
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A positively charged thin metal ring of radius
is fixed in the xy-plane, with its centre at the
origin. A negatively charged particle is released
from rest at the point where
Consider the following statements:
(A) The electric field at due to the metallic ring
is always directed towards origin.
(B) The negatively charged particle is accelerated
towards origin and undergoes periodic
motion.
Which of the above statements is/are correct?
is fixed in the xy-plane, with its centre at the
origin. A negatively charged particle is released
from rest at the point where
Consider the following statements:
(A) The electric field at due to the metallic ring
is always directed towards origin.
(B) The negatively charged particle is accelerated
towards origin and undergoes periodic
motion.
Which of the above statements is/are correct?
View answer and explanation
Correct option: B
B only
Option B (B only) is correct. The electric field at P is along the z-axis, and the negatively charged particle accelerates towards the origin, resulting in periodic motion.
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Statement-II: tangent at any point of electric line of force gives the direction of electric field A force of is acting between two charges in air if the space between them is completely filled with glass , then the new force will be …… An electron is placed at centre of a conducting sphere of radius 0.2 metre having charge coulomb. The force of on the electron is ________ N
Reason:- At any point, there is only one direction of electric field. Statement-I: A positive point charge is brought in an electric field, the electric field at neary by point will increase
Statement-II: Electric field produced by charge may favour the existing electric filed Two particles having equal mass and charge
are separated by a distance The force(s) they
experience is (are) Statement-I: No 2 electric lines of force can intersect each other
Statement-II: tangent at any point of electric line of force gives the direction of electric field A force of is acting between two charges in air if the space between them is completely filled with glass , then the new force will be …… An electron is placed at centre of a conducting sphere of radius 0.2 metre having charge coulomb. The force of on the electron is ________ N