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Showing posts with label Electrostatics. Show all posts
Showing posts with label Electrostatics. Show all posts

NEET and JEE preparation | Physics Guide with Hints and Solutions | Electrostatics

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 Electrostatics

India Study Solution MCQ Test Series

(Practice Questions with Hints and Solutions)

NEET, JEE Main, JEE Advanced | Medical and Engineering Entrance Exams | MBBS Admission Test

Hi Guys,

Welcome back to your own site India Study Solution @www.indiastudysolution.com

Here is your next Test Series a set of 10 most important solved questions (Q. No. 21-30) for NEET and JEE from Electrostatics in Physics with their hints & solutions.

Click to check NEET and JEE Main Syllabus for chapter Electrostatics.

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Electrostatics  - Questions Bank with Solutions

India Study Solution Test Series – Set 3 (Q. No 21-30)

Question 21: When charge is given to a body

a. more charge accumulates at regions of small curvature

b. more charge accumulates at regions of large curvature

c. charge is distributed uniformly irrespective of curvature

d. none of the above is true

 

Question 22: Two equal positive charges are kept at points A and B. The electric potential at the points between A and B (excluding these points) is studied while moving from A to B. The potential

a. continuously increases

b. continuously decreases

c. increases then decreases

d. decreases then increases

 

Question 23: There are two metallic spheres of same radii but one is solid and the other is hollow, then:

a. solid sphere can be given more charge

b. hollow sphere can be given more charge

c. they can be charged equally (maximum)

d. none of the above

 

Question 24: A charge of 5C experiences a force of 5000N when it is kept in uniform electric field. What is the potential difference between two points separated by a distance of 1cm?

a. 10V

b. 250V

c. 1000V

d. 2500V

 

Question 25: The unit of permittivity of free space εo is

a. coulomb/newton-metre

b. coulomb2/newton-metre2

c. newton-metre2/coulomb2

d. coulomb2/(newton-metre)2

 

Question 26: The electric charge in uniform motion produces-

a. an electric field only

b. a magnetic field only

c. both electric and magnetic fields

d. neither electric nor magnetic fields

 

Question 27: A conductor has 14.4 x 10-19 C positive charge. The conductor has:

(Charge on electron = 1.6 x 10-19 C)

a. 9 electrons in excess

b. 27 electrons in short

c. 27 electrons in excess

d. 9 electrons in short

 

Question 28: An electric dipole is placed in a uniform electric field. The net electric force on the dipole

a. is always zero

b. depends on the orientation of the dipole

c. can never be zero

d. depends on the strength of the dipole

 

Question 29: A charged particle (charge q) is moving in a circle of radius R with uniform speed v. The associated magnetic moment μ is given by:

a. qvR/2

b. qvR2

c. qvr2/2

d. qvR


Question 30: The law, governing the force between electric charges is known as

a. Ampere’s law

b. Ohm’s law

c. Faraday’s law

d. Coulomb’s law

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  India Study Solution - Test Series Answers

electrostatics  

Hints and Solutions of Physics Electrostatics MCQ Test Series – Set 3 (Q. No.21–30)

https://www.indiastudysolution.com

Answer 21:b. Answer 22: d.

Answer 23: c

(Hint: Both the spheres can be charged equally. Because for metallic sphere either solid or hollow, the charge will raised on the sphere. Since, both spheres have same surface area, so they can hold equal maximum charge)

Answer 24: a. Answer 25: b. Answer 26: c.

Answer 27: d (Hint: As conductor has positive charge. So, there is deficiency of electrons).

Answer 28: a.

Answer 29: a

(Hint: As revolving charge is equivalent to a current,
So,

www.indiastudysolution.com - NEET and JEE preparation | Physics Guide with Hints and Solutions | Electrostatics
 Answer 30: d.

 Electrostatics: Further study


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

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Electrostatics

India Study Solution Physics Test Series (Prepare and Practice)

NEET, JEE, IIT, AIIMS, NTSE | Engineering, BDS, MBBS Admission Test
Hi Guys,
Welcome back to your own site India Study Solution
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).
This is a very important chapter and so, we would request you to please bookmark this site or if you have not subscribed us yet then please subscribe before you forget (it is free) so that you get information whenever we publish more questions on this and other chapter / subject.
Hope it would help you to learn and enhance your confidence while preparing for NEET, JEE (IIT), AIIMS, COMEDK, NEST or any other Medical and Engineering Entrance Exams.
So, friends without wasting time let us start -
Electrostatics  
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
electrostatics 
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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Electrostatics : India Study Solution Test Series, solved Physics objective questions for JEE, NEET, other admission tests

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Physics - Electrostatics

India Study Solution Physics Test Series (Confidence Booster)
NEET, JEE, IIT, AIIMS, NTSE | Engineering, BDS, MBBS Admission Test
Hi Guys,
Welcome back to your own site India Study Solution
From today we are starting a new chapter Electrostatics from Physics which will have 30 sets of test series, each set containing 10 most important MCQ questions with their hints & solutions (given at the end).
(Please scroll down to find Electrostatics syllabus for NEET and JEE).
This is a very important chapter and so Friends, we would ask you to please bookmark this site or if you have not subscribed us yet then please subscribe before you forget (it is free) so that you get information whenever we publish more questions on this and other chapter / subject.
Hope it would help you to learn and enhance your confidence while preparing for NEET, JEE (IIT), AIIMS, COMEDK, NEST or any other Medical and Engineering Entrance Exams.
So, friends without wasting time let us start -



Electrostatics  
India Study Solution Test Series – Set 1 (Q. No 1-10)
Question 1: A total charge Q is broken in two parts Q1 and Q2 and they are placed at a distance R from each other. The maximum force of repulsion between them will occur, when
Electrostatics : India Study Solution Test Series, solved Physics objective questions

Question 2: When the separation between two charges is increased, the electric potential energy of the charges
a. increases
b. decreases
c. remains the same
d. may increase or decrease

Question 3: Three charges +4q, -q and +4q are kept on a straight line at position (0, 0, 0), (a, 0, 0) and (2a, 0, 0) respectively. Considering that they are free to move along the x-axis only
a. all the charges are in stable equilibrium
b. all the charges are in unstable equilibrium
c. only the middle charge is in stable equilibrium
d. only the middle charge is in unstable equilibrium

Question 4: A soap bubble is given a negative charge, then its radius:
a. decreases
b. increases
c. remains unchanged
d. nothing can predicted as information is insufficient

Question 5: When a soap bubble is charged it
a. Bursts
b. Does not undergo any charge
c. Expands
d. Contracts

Question 6: Due to the motion of a charge, its magnitude
a. changes
b. does not change
c. increase (or) decreases depends on its speed
d. cannot be predicted

Question 7: Charges +q and –q are placed at points A and B respectively which are a distance 2 L apart, C is the midpoint between A and B. The work done in moving a charge +Q along the semicircle CRD is:
Electrostatics : Solved Physics objective questions for JEE, NEET

Question 8: Static electricity is produced by
a. Friction only
b. Induction only
c. Friction and induction both
d. Chemical reaction only

Question 9: A simple pendulum of period T has a metal bob which is negatively charged. If it is allowed to oscillate above a positively charged metal plate, its period will be
a. Remains equal to T
b. Less than T
c. Greater than T
d. Infinite

Question 10: If a positive charge is shifted from a low-potential region to a high –potential region, the electric potential energy
a. increases
b. decreases
c. remains the same
d. may increase or decrease

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
electrostatics 
Hints and Solutions of Physics Electrostatics MCQ Test Series – Set 1 (Q. No.1–10)
Answer 1: d. Answer 2: d.
Answer 3: b.





Answer 4: b (Hint: On the surface of bubble same charge will distribute, so there is repulsion of charges so radius of bubble increases).
Answer 5: c. Answer 6: b.
Answer 7: d (4).
(Hint: Work done is equal to change in potential energy. In 1st case, when charge +Q is situated at C. Electric potential energy of system.)
https://www.indiastudysolution.com - image depicting solution of Electrostatics question

Answer 8: c. Answer 9: b. Answer 10: a.
 Electrostatics: More questions to follow

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