CBSE XII Science Physics Electric Charges and Fields
two particles, carrying chargees -q and +q and having equal masses m each,are fixed at the ends of a light rod of length 'a' to form a dipole.the rod is clamped at an end and is placed in a uniform electric field E with the axis of the diploe along hte electric field.The rod is slightly tilted and then released.Neglecting gravity find the time period of small oscillations.please explain the answer step by step with a digram....please
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24th May 2014
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CBSE XII Science Physics Electric Charges and Fields
two small identical electrical dipole AB and CD of dipole moment p each are kept at an angel 120.what isthe resultant dipole moment . if this is the syestem subjected to E directed along +x direction.what will be the magnitude and direction of torque acting on it? justify ur ans.
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give the physical significance of electric dipole.
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what happens when an electric dipole is held in a non-uniform electric field? what will be the force on the torque when the dipole is held parallel or antiparallel to the field.
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26th March 2018
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CBSE XII Science Physics
why does a dipole experiences force and torque when placed in non-uniform electric field. also when it will be placed in uniform will it be experiencing net force or torque or both. answer in detail and dont provide links
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A dipole with an electric moment p is at a distance r from a uniformly charged long thread find force acting on the dipole if vector p is oriented along the thread
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Explain in detail with the help of diagram that when an ELECTRIC DIPOLE is placed in a NON UNIFORM ELECTRIC FIELD the dipole experiences BOTH TORQUE and NET FORCE
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Derive an expression for the potential energy of a dipole of dipole moment p placed in an electric field E. Find the orientation of the dipole when it is in (1) stable equilibrium (2) unstable equilibrium.
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CBSE XII Science Physics Electric Charges and Fields
In which orientation, a dipole placed in a uniform electricfield is in (i) stable, (ii) unstable equilibrium?
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A large uniformly charged(negative) plate is placed in XZ plane and positve charge Q is fixed on the Y-axis. A dipole is placed in between these as shown. The dipole initially moves in
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31st May 2019
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CBSE XII Science Physics Electric Charges and Fields
A point charge is placed at the centre of a closed Gaussian spherical surface of radius r. Electric flux passing through the surface is Φ. How is the electric flux Φ through the surface affected when the following changes are made in turn: (i) The spherical surface is replaced by a cylindrical surface of the same radius? (ii) The point charge is replaced by an electric dipole? Justify your answer in each case.
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In a certain region of space, electric field is along the z-direction throughout. The magnitude of electric field is, however, not constant but increases uniformly along the positive z-direction, at the rate of 105 NC-1 per metre. What are the force and torque experienced by a system having a total dipole moment equal to 10-7 Cm in the negative z-direction?
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15th June 2019
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CBSE XII Science Physics
Two identical spheres carrying charges of +9 micro coloumb and -9micro column.find the electric dipole moment.The separation between them is 5×10raise to-6
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19th June 2019
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CBSE XII Science Physics
To find the electric field by dipole at the center of dipole if we make use of formula for electrical field at axial point and taking r= 0 then it comes out to be zero But if we take formula for equatorial point it does not come out to be zero I want to ask that why we can't use formula for axial point taking r=0
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10th July 2019
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CBSE XII Science Physics
an electric dipole is placed in a uniform electric field vector E with its dipole moment vector P parallel to the field . Find 1) the work done in turning the dipole till its dipole moment points in the direction opposite to vector E.
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13th August 2019
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when dipole is placed in a uniform electric field net force on it is 0 but torque is not 0. but according to formula τ=rFsinθ, as F is 0 so τ should be 0?
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Answer this question.
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An electric dipole is formed by two particles fixed at the end of a light rod of length L. Mass m and 2m with charge q and - q. The system is placed in such a way that the dipole axis is parallel to a uniform electric field. If the dipole is slightly rotated about its center then show that for small angular displacement it's an shm. And find time period
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what is electric dipole
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An electric dipole moment 4x10^-9 cm is aligned at 30°with the direction of a uniform electric field of magnitude 5x10^4 NC^-1.calculate the magnitude of the torque acting on the dipole?
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6th July 2020
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CBSE XII Science Physics Electric Charges and Fields
the electric field at a point on the axial line at a distance of 10cm from the centre of an electric dipole is 3×10³NC·¹ in air while at a diatance of 15cm,the electric field is 2×10³NC·¹ Calculate the length of an electric dipole. 3×10³NC·¹
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7th July 2020
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A dipole is placed parallel to electric field. If W is the work done in rotating the dipole from 0 degree to 60 degree, then work done in rotating it from 0 to 180 degree is
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When should we use the formula for electric field due to short dipole if the same isn't mentioned in the question ?
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Find the potential of the field created by the dipole at point A, located at a distance r=0.5 m, in a direction at an angle 300, relative to the electric moment of the dipole. Medium is water. The dipole is formed by charges q=2·10-7 C, that located at a distance l=0.5 cm.
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10th March 2021
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Determine electric field at a point p for two identical dipole placed along x and y axis with dipole moment p and angle 45°
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