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Which of the following is not a property of electric field

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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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Electric Charges The physical property of matter that causes it to experience a force when placed in an electromagnetic field is called electric charge. Electric charge is a characteristic that accompanies fundamental particles, wherever they exist. The process of charging a neutral body by bringing a charged body nearby it without making contact between the two bodies is known as charging by induction.Figures given below are showing the sequential steps of charging a conductor permanently by using the process of charging by induction.The value of charge on a body which carries 30 excess electrons

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Charge between Parallel Plates Surface charge density is defined as the charge per unit surface area of surface charge distribution, `i.e. sigma = (dq)/(dS)`Two large, thin metal plates are parallel and close to each other. On their inner faces, the plates have surface charge densities of opposite signs having magnitude of `17.0 xx 10^(-22) Cm^(-2)` as shown belowThe intensity of electric field at a point is `E=(sigma)/(epsilon_0)`where, `epsilon_0` = permittivity of free space`E` between the plates

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A metallic hollow spherical surface of radius 5 cm is charged such that the potential on its surface is `10 V`. The potential at the centre

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Ohm’s law in point form in field theory can be expressed

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Electron Moving in Magnetic Field An electron with a speed `v_0 ( < < c)` moves in a circle of radius `r_0`, in a uniform magnetic field. This electron is able to travel in a circular path as magnetic field is perpendicular to the velocity of the electron. The time required for one revolution of the electron is `T_0`. The speed of the electron is now, doubled to `2v_0`.The radius of the circle will change

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Moving Coil GalvanometerMoving coil galvanometer operates on Permanent Magnet Moving Coil (PMMC) mechanism and was designed by the scientist D’arsonval.Moving coil galvanometers are of two types (i) Suspended coil (ii) Pivoted coil type or tangent galvanometer.Its working is based on the fact that when a current carrying coil is placed in a magnetic field, it experiences a torque. This torque tends to rotate the coil about its axis of suspension in such a way that the m agnetic flux passing through the coil is maximum .To increase the current sensitivity of a moving coil galvanometer, we should

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A circular coil of mean radius of 7 cm and having 4000 turns is rotated at the rate of 1800 rev/min in the earth’s magnetic field `(B = 0.5 G)`, the maximum emf induced in coil will

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Assertion: Magnetic flux of a magnetic field B passing through an area A is given by the relation `phi= B • A`. Reason: Quantity obtained by product of two vectors is always

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Faraday’s Laws According to the Faraday’s first law, whenever the amount of magnetic flux linked with a circuit changes, an emf is induced in it. Induced current is determined by the rate at which the magnetic flux changes.Mathematically, the magnitude of the induced emf in a circuit is equal to the rate of change of magnetic flux through the circuit.Induced emf `prop` Rate of change of magnetic fluxThe instantaneous magnetic flux linked with a coil is given by `phi= (5t^3 -100t + 300) Wb`. The emf induced in the coil at time `t = 2 s`

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Induced CurrentThe steady current in the coil `C_2` as shown below produces a steady magnetic field. As coil `C_2` is moved towards the coil `C_1`, the galvanometer shows a deflection. This indicates that electric current is induced in coil `C_1`. When `C_2` is moved away, the galvanometer shows a deflection again, but this time in the opposite direction. This deflection is based upon the Faraday’s law of electromagnetic induction.Which of the following statement(s) is/are correct? I. The steady current in the coil `C_2` produces a steady magnetic field. II. If coil `C_2` is moved towards the coil `C_1`, the galvanometer

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Answer the following questions: Two students are separated by a 7 m partition wall in a room 10 m high. If both light and sound waves can bend around obstacles, how is it that the students are unable to see each other even though they can converse

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For a single slit of width a, the first minimum of the interference pattern of `a `monochromatic light of wavelength `lambda`, occurs at an angle of `lambda//a`. At the same angle of `lambda//a`, we get a maximum for two narrow slits separated by a distance `a`.

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If a point charge q is placed at one corner of a cube, what is the flux linked with the

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What is elementary unit of charge?

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An oil drop of 12 excess electrons is held stationary under a constant electric field of 2.55 × 104 `NC^(–1)` (Millikan’s oil drop experiment). The density of the oil is 1.26 g `cm^(–3)`. Estimate the radius of the drop. (g = 9.81 m`cm^(–2)`; e = 1.60 × 10–19

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A hollow charged conductor has a tiny hole cut into its surface. Show that the electric field in the hole is `(σ/2ε_0 )hatn` , where `hatn` is the unit vector in the outward normal direction, and σ is the surface charge density near the

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A square of side L meters lies in the x-y plane in a region, where the magnetic field is given by `B =B_o (2hati + 3hatj + 4hatk)` where Bo is constant. The magnitude of flux passing through the square

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Find the current in the wire for the configuration shown in Fig . Wire PQ has negligible resistance. B, the magnetic field is coming out of the paper. θ is a fixed angle made by PQ travelling smoothly over two conducting parallel wires seperated by a distance

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

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