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India Study Solution MCQ Test Series - Electrostatics | Physics practice questions for JEE, NEET



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Here is your next Set of Questions (Q. No. 11-20) for chapter Electrostatics from Physics with their hints & solutions (given at the end).
(Please scroll down to find Electrostatics syllabus for NEET and JEE).
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India Study Solution Test Series – Set 2 (Q. No 11-20)
Question 11: An electron is projected with certain velocity into an electric field in a direction opposite to the field. Then it is
a. accelerated
b. retarded
c. neither accelerated nor retarded
d. either accelerated or retarded

Question 12: If the electric potential at a point in free space is 5 x 1011 V, what will be the electric field at that point
a. 4πε0 x 1022 V/m
b. 12πε0 x 1020 V/m
c. 4πε0 x 1020 V/m
d. Nothing can be said

Question 13: In induction the charge induced in the near surface of a dielectric is
a. Equal and dissimilar
b. Greater and dissimilar
c. Lesser and dissimilar
d. Equal and similar

Question 14: Total electric force on an electric dipole placed in an electric field of a point charge is:
a. always zero
b. never zero
c. zero when mid-point of dipole coincides with the point charge
d. zero when dipole axis is along any electric line of force

Question 15: Which of the following is not the unit of charge?
a. farad
b. coulomb
c. stat coulomb
d. faraday

Question 16: +2C and +6C two charge are repelling each other with a force of 12N. If each charge is given -2C of charge, the value of the force will be
a. 4N (Attractive)
b. 4N (Repulsive)
c. 8N (Repulsive)
d. Zero

Question 17: A point charge +Q is placed at the centroid of an equilateral triangle. When a second charge +Q is placed at a vertex of the triangle, the magnitude of the electrostatic force of the central charge is 8N. The magnitude of the net force on the central charge when a third charge +Q is placed at another vertex of the triangle is:
a. zero
b. 4N
c. 4√2 N
d. 8 N

Question 18: Two parallel plates carry opposite charges such that the electric field in the space between them is in upward direction. An electron is shot in the space and parallel to the plates. Its deflection from the original direction will be
a. Upwards
b. Downwards
c. Circular
d. Elliptical

Question 19: Angle between equipotential surface and lines of force is
a. Zero
b. 1800
c. 900
d. 450

Question 20: Consider the four field patterns shown. Assuming there are no changes in the regions shown, which of the patterns represents a possible electrostatic field:

India Study Solution MCQ Test Series - Electrostatics | Physics practice questions for JEE, NEET

a. 1
b. 2
c. 3
d. 4

Electrostatics (Syllabus for NEET and JEE): Introduction, Electric Charges and their properties, Frictional Electricity, Charges and their Conservation, Unit of Charge, Conductors and Insulators, Presence of free Charges and bound Charges inside a Conductor, Charging by Induction, Coulomb’s Law, Dielectric Constant,  Forces between Multiple Charges, Electric Field, Electric Field lines, Electric Flux, Electric Dipole, Dipole in a Uniform External Field, Torque on a Dipole in a uniform electric field,  Continuous Charges distribution, Gauss’s Law and its applications, Electrostatic Potential, Potential due to Point Charge / Electric dipole / System of charges, Equipotential Surfaces, Potential Energy of a System of Charges/ External Field,       
India Study Solution Test Series
Hints and Solutions of Physics Electrostatics MCQ Test Series – Set 2 (Q. No.11–20)
Answer 11: a.
Answer 12: d
Hint: Search for the relations of electric potential and electric field at a particular point at any point, electric potential due to charge Q is
Answer 13: c.
Answer 14: b
(Hint: Electric field of a point charge is non-uniform hence, net force can never be zero)
Answer 15: a. Answer 16: b.
Answer 17: d
(Hint: R = √82 + 82 + 2.8.8 cos1200 = 8N)
Answer 18: b. Answer 19: c.
Answer 20: b
(Hint: Pattern (1) can be eliminated because field lines cannot simultaneously originate from and converge at a single point; (3) can be eliminated because there are no charges in the region, and so there are no sources of field lines; (4) can be eliminated because electrostatic field lines do not close on themselves).
 Electrostatics: Further study

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