Class 12 Physics Chapter Electric Charges and Fields Free test quiz for 2026 exam

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12th Physics: Electric Charges and Fields

1 / 10

1. When a comb rubbed with dry hair attracts pieces of paper. This is because the

comb polarizes the piece of paper

comb induces a net dipole moment opposite to the direction of field

electric field due to the comb is uniform

comb induces a net dipole moment perpendicular to the direction of field

2 / 10

2. In annihilation process, in which an electron and a positron transform into two gamma rays, which property of electric charge is displayed?

Additivity of charge

Quantisation of charge

Conservation of charge

Attraction and repulsion

3 / 10

3. The formation of a dipole is due to two equal and dissimilar point charges placed at a

short distance

long distance

above each other

none of these

4 / 10

4. An electric field can deflect

neutrons

X-rays

γ-rays

α-particles

5 / 10

5. The electric flux through the surface

in Fig. (iv) is the largest

in Fig. (iii) is the least

in Fig. (ii) is same as Fig. (iii) but is smaller than Fig. (iv)

is the same for all the figures

6 / 10

6. A body is positively charged, it implies that

there is only positive charge in the body.

there is positive as well as negative charge in the body but the positive charge is more than negative charge

there is equal positive and negative charge in the body but the positive charge lies in the outer regions

negative charge is displaced from its position

7 / 10

7. The value of electric permittivity of free space is

9 × 10⁹ NC²/m²

8.85 × 10^–12Nm²/C² sec

8.85 × 10^–12 C²/Nm²

9 × 109C²/Nm²

8 / 10

8. Two spheres A and B of exactly same mass are given equal positive and negative charges respectively. Their masses after charging

remains unaffected

mass of A > mass of B

mass of A < mass of B

Nothing can be said

9 / 10

9. A solid sphere of radius R has a charge Q distributed in its volume with a charge density.

3

5

2

7

10 / 10

10. Assertion : The positive charge particle is placed in front of a spherical uncharged conductor. The number of lines of forces terminating on the sphere will be more than those emerging from it.
Reason : The surface charge density at a point on the sphere nearest to the point charge will be negative and maximum in magnitude compared to other points on the sphere.

If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.

If Assertion is correct but Reason is incorrect.

If both the Assertion and Reason are incorrect.

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This comprehensive test quiz is designed to help you grasp the fundamental concepts of electric charges and fields in a fun and interactive manner. The quiz includes a wide range of questions. You can access the test paper as a downloadable PDF, allowing you to take the quiz at your convenience and pace.

The questions in the quiz cover various topics from Chapter 1, as well as related concepts from Chapters 2 and 3, enabling you to reinforce your understanding of the subject. By attempting this mock test, you will gain insights into your strengths and identify areas that require more attention. It is a perfect opportunity to assess your knowledge and get well-acquainted with the exam pattern.

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