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An electric dipole is placed along the x-axis at the origin o. A point P is at a distance of 20 cm from this origin such that OP makes an angle `π/ 3` with the x-axis. If the electric field at P makes an angle `theta` with the x-axis, the value of `theta` would be

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

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A particle having a charge of `1.6xx 10^(-19) C` enters between the plates of a parallel plate capaciter. The initial velocity of the particle is parallel to the plates. A potential difference of 300v is applied to the capacitor plates. If the length of the capacitor plates is 10cm and they are separated by 2cm, Calculate the greatest initial velocity for which the particle will not be able to come out of the plates. The mass of the particle is `12xx 10^(-24) kg`

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

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A charged particle of mass 1 kg and charge 2µc is thrown from a horizontal ground at an angle `theta = 45^o` with speed 20m/s. In space a horizontal electric field `E = 2 xx10^7 `V/m exist. The range on horizontal ground of the projectile thrown is ...............

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

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If electron in ground state of H-atom is assumed in rest then dipole moment of electron proton system of H-atom is ............... . Orbit radius of H atom in ground state is `0.56 A^o`

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

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At what angle θ a point P must be located from dipole axis so that the electric fieldintensity at the point is perpendicular to the dipole axis

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

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A n electric dipole is placed at an angle of 60o with an electric field of intensity `10^5 NC^(–1)` . It experiences a torque equal to `8 sqrt3Nm` . If the dipole length is 2cm then the charge on the dipole is ...........

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

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An electric dipole coincides on z axis and its mid point is on origin of the cartesian co-ordinate system. The electric field at an axial point at a distance z from origin is `vecE`(z) and electric field at an equatorial point at a distance y from origin is `vecE(y) |vecE_((z))/vec E_((y))| (y = z > > a) =`

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

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An oil drop of 12 excess electrons is held stationary under a constant electric field of `2.55×10^4 Vm^(-1)` . If the density of the oil is 1.26 gm/`cm^3` then the radius of the drop is ..........

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

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A Charge q is placed at the centre of the open end of cylindrical vessel. The flux of theelectric field through the surface of the vessel is

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

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The inward and outward electric flux for a closed surface in units of `Nm^2` /C are respectively `8 xx10^3` and `4 xx10^3` . Then the total charge inside the surface is ...........

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

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A sphere of radius R has a uniform distribution of electric charge in its volume. At adistance x from its centre, (for x < R), the electric field is directly proportional to

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

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The electric flux for gaussian surface A that enclose the chrged particles in free space is ............. (given `q_1 = –14nc, q_2 = 78.85 nc, q_3 =

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

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A hollow cylinder has a charge q coulomb within it. If `phi` is the electric flux in units of voltmeter associated with the curved surface B, the flux linked with the plane surface A in units of volt-meter will be

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

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An infinitly long thin straight wire has uniform linear charge density of `1/3` c/m . Then, the magnitude of the electric intiensity at a point 18 cm away is .......... `NC^(–1)`

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

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Two points are at distances a and `b (a < b)` from a long string of charge per unit length `lambda`.The potential difference between the points in proportional to

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

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A long string with a charge of `lambda` per unit length passes through an imaginary cube of edge `l`. The maximum possible flux of the electric field through the cube will be

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

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Two Points P and Q are maintained at the Potentials of 10 v and –4 v, respectively. Thework done in moving 100 electrons from P to Q is

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

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The electric Potential V at any Point o (x, y, z all in metres) in space is given by `V = 4x^2` volt. The electric field at the point (1m, 0.2m) in volt/metre is

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

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Charges of `+ 10/3xx10^(-19) C` are placed at each of the four corners of a square of side 8cm. The potential at the intersection of the diagonals is

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

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Three charges 2q, –q, –q are located at the vertices of an equilateral triangle. At the centre of the

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

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