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An infinite line charge produces a Field of `18 xx 10^4` N/C at `0.02 m`. The linear charge density

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A long cylindrical wire carries a positive charge of linear density `lambda. An electron `(-e, m)` revolves around it in a circular path under the influence of the attractive electrostatic force The speed of electron

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Electrification by rubbing two bodies together is due to transference of ............from one body to the

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The point charges each equal to 1C exert a force ............mutually when they are placed lm apart in

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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

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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

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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

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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

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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

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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 !=

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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

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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

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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

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