CBSE Class 12 Physics Electric Charges And Fields Worksheet Set 03

Class 12 Physics Practice Set: Chapter 01 Electric Charges And Fields

Review targeted practice sets for Class 12 Physics Chapter 01 Electric Charges And Fields. Built according to official educational guidelines for the 2026-27 academic year, these downloadable worksheets support daily revision and core concept reinforcement.

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Electric Charges and Fields
 
Section A Conceptual and application type Questions
 
1 What happens to the electric field inside a dielectric ,when it is placed in an external electric field?
 
2 What would be the work done in taking a charge q from one point to another point on the circumference of a circle , with another point charge Q at the centre?
 
3
CBSE Class 12 Physics Electric Charges And Fields Worksheet Set C 1
Two plane sheets of charge densities +σ and -σ are kept in air as shown in figure .What are the electric field intensities at points A and B?
 
4 For a system of two charges +5μC and – 3μC separated by a distance of d apart , draw electric lines of forces.
 
5 Electric field is always normal to the surface of a conductor,justify.
 
6 (a) Using Gauss law, derive an expression for the electric field intensity at any point outside a uniformly charged thin spherical shell of radius R and charge density s C/m 2 . Draw the field lines when the charge density of the sphere is (i) positive, (ii) negative.
 
7 Draw a free body diagram to show a charged particle of mass m and charge q whose weight is balanced in between two plates of equal and opposite charge densities . Write the equation for its equilibrium.
 
8 What is the precaution to be taken in selecting the Gaussian surface ,regarding the charge ?
 
9 The distance of the field point on the equatorial plane of a small electric dipole , is halved. By what factor will the electric field ,due to the dipole change?
 
10 Why is it difficult to perform electrostatic experiments on a humid day?
 
11 Force of attraction between two point charges at a distance of d apart in a medium is F. What should be the distance in the same medium so that the force of attraction between them becomes 9F?
 
12

CBSE Class 12 Physics Electric Charges And Fields Worksheet Set C 2

S1 and S2 are two hollow spheres enclosing Q and 2Q respectively in air.
i) What is the ratio of the electric flux through S1 and S2 ?
ii) How will the electric flux through S1 change , if a medium of dielectric constant 5 is introduced inside S1.
 
13 Draw a figure which correctly represents electric lines of force in the following cases i) A metal plate M placed in a uniform electric field.
ii) A metal sphere M placed in a uniform electric field.
 
14 How does an electrically polarized object differ from an electrically charged object?
 
15 Can the electric field at a point be zero , while the electric potential is non zero? Justify. Can the electric potential at a point be zero, while the electric field is non zero? Justify.
 
16 In a type of charge configuration electric field at a point due to it is
i) independent of distance from the point
ii) inversely proportional to the distance from the point
iii) inversely proportional to the square of distance from the point
iv) inversely proportional to the cube of distance from the point
Identify the type of charge configuration in each case.
 
17 Two point charges of Q and q are placed at distances x and x/2 respectively from a third charge of 4q. All the three charges are on the same straight line. Calculate Q in terms of q so that the net force on q is zero.


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Exam Preparation Worksheet for Class 12 Physics Chapter 01 Electric Charges And Fields

Download Practice Sheet: Chapter 01 Electric Charges And Fields (Class 12 Physics)

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Yes, our CBSE Class 12 Physics Electric Charges And Fields Worksheet Set 03 includes a variety of questions like Case-based studies, Assertion-Reasoning, and MCQs as per the 50% competency-based weightage in the latest curriculum for Class 12.

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