Recent questions tagged chapter1

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Two spheres have their surface charge densities in the ratio of 2 : 3 and their radii 3 : 2. The ratio of the charges on them i s

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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An electric charge `q` is placed at one of the corners of a cube of side `a`. The electric flux on one of its faces will

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According the Gauss’s theorem, electric field of an infinitely long straight wire is inversely proportional to

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Which of the following statement(s) is/are incorrect regarding the point

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The spatial distribution of the electric field due to charges (A, B) is shown in figure. Which one of the following statements is

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Match the Column I (electric lines of force) with Column II (types of charge) and select the correct answer from the codes given below. Column I Column II A. p.A pair of equal and opposite charges B. q. A pair of positive charges C. r. A single positive charge D. s. A single negative charge

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Match the Column I (type of body) with Column II (electric field) and select the correct answer from the codes given below. Column I Column II A. Infinite plane sheet of charge p. `(lambda)/(2piepsilon_0r)` B. Infinite plane sheet of uniform thickness q. `(sigma)/(2epsilon_0)` C. Infinitely long uniformly charged straight wire r. `(sigma)/(epsilon_0)`

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: When we produce charge `q_1` on a body by rubbing it against another body which gets a charge `q_2`, in the process, then `q_1 + q_2 = 0`. Reason: Charge on an isolated system remains

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: When charges are shared between any two bodies, then no charge is really lost but some loss of energy does occur. Reason: Some energy disappears in the form of heat, sparking,

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: At macroscopic level, quantisation of charge has no practical consequence and can be ignored. Reason: `1 muC` charge contains `10^(15)` times electronic charge e

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: Mass of a body does not decreases, when it is negatively charged. Reason: Charging is not mainly due to transfer of

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Assertion: The gravitational force is the dominating force in the universe. Reason: The coulomb force is weaker than the gravitational

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: At the centre of the line joining two equal and opposite charges, `E = 0`. Reason: At the centre of the line joining two equal and similar charge, `E !=

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: A point charge is brought in an electric field, then electric field at a nearby point may increase or decrease. Reason: The electric field is dependent on the nature of

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: Acceleration of charged particle in non-uniform electric field does not depend on velocity of charged particle. Reason: Charge is an invariant

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: Electric lines of force cross each other. Reason: Electric field at a point does not superimposes to give one resultant electric

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: Away from a charge field lines gets weaker and density of field lines is less, resulting in well separated lines. Reason Only a finite number of lines can be drawn from a

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: On going away from a small electric dipole, electric field decreases. Reason: Electric field is inversely proportional to square of distance from an electric

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: If a dipole is enclosed by a surface, then according to Gauss’s law, electric flux linked with it will be zero. Reason: The charge enclosed by a surface is

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: In a region, where uniform electric field exists, the net charge within volume of any size is zero. Reason: The electric flux within any closed surface in a region of uniform electric field is

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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