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An imaginary equilateral triangle ABC of side length 2 m is placed in a uniform electric field E=10 N C-1 as shown. Then. VA-VB=

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Important Questions on Electrostatics

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As shown in the figure below, a point charge q moves from point P to a point S traversing a path PQRS in a uniform E. The electric field is directed along a direction parallel to x-axis. The coordinates of, P,Q,R and S are a,b,02a,0,0a,-b,0 and 0,0,0 respectively. What is the work done by the field in the process?

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A Van de Graff generator has a spherical metal shell as an electrode which is at a potential 15×106 V. If the dielectric strength of the surrounding medium is 5×107Vm-1 then the diameter of the shell is
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A positively charged particle is released from rest in an uniform electric field. The electric potential energy of the charge
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Concentric metallic hollow spheres of radii R and 4R hold charges Q1 and Q2 respectively. Given that surface charge density of the concentric spheres are equal, the potential difference VR-V(4R) is:
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Three point charges of 2mC each are kept at the vertices of an equilateral triangle of side 50 cm. If the system is supplied energy at the rate of 2 kW, the time taken to move one of the charges to the mid point of the line joining the other two charges is
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A long cylindrical shell carries positive surface charge σ in the upper half and negative surface charge σ in the lower half. The electric field lines around the cylinder will look like figure given in:

(figures are schematic and not drawn to scale)
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Figure shows three arrangements of electric field lines. In each arrangement, a proton is released from rest at point A and then accelerated through point B by the electric field. Points A and B have equal separations in the three arrangements. If p1,p2 and p3 are linear momentum of the proton at point B in the three arrangement respectively, then

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In the electric field of a point charge q which is located at center of sphere as shown, a certain charge is carried from point A to B, C, D and E. Then work done by external agent

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