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General
Easy
Question
A hollow cylinder has a charge q coulomb within it. If 
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 voltmeter will be:
The correct answer is:
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A square surface of side L metres is in the plane of the paper. A uniform electric electric field 
(volt/m), also in the plane of the paper, is limited only to the lower half of the square surface(as shown in figure). The electric flux in SI units associated with the surface is
A square surface of side L metres is in the plane of the paper. A uniform electric electric field (volt/m), also in the plane of the paper, is limited only to the lower half of the square surface(as shown in figure). The electric flux in SI units associated with the surface is
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To charges q1 and q2 are placed 30 cm apart, shown in the figure. A third charge q3 is moved along the arc of a circle of radius 40 cm from C to D. The change in the potential energy of the system is 
where k is
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As per this diagram a point charge +q is placed at the origin O. Work done in taking another point charge —Q from the point A [co-ordinates (0, a)] to another point B [co-ordinates (a, 0)] along the straight path AB is
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physics-General
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Figure shows three points A, B and C in a region of uniform electric field E. The line AB is perpendicular and BC is parallel to the field lines. Then which of the following holds good. Where VA ,VB and VC represent the electric potential at points A, B and C respectively
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A charge q is located at the centre of a cube. The electric flux through any face is
A charge q is located at the centre of a cube. The electric flux through any face is
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Four charges +Q, –Q, + Q, –Q are placed at the corners of a square taken in order. At the centre of the square
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A cylinder of radius R and length L is placed in a uniform electric field E parallel to the cylinder axis. The total flux for the surface of the cylinder is given by
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A solid conducting sphere of radius a has a net positive charge 2Q. A conducting spherical shell of inner radius b and outer radius c is concentric with the solid sphere and has a net charge –Q. The surface charge density on the inner and outer surfaces of the spherical shell will be
A solid conducting sphere of radius a has a net positive charge 2Q. A conducting spherical shell of inner radius b and outer radius c is concentric with the solid sphere and has a net charge –Q. The surface charge density on the inner and outer surfaces of the spherical shell will be
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The acceleration of an electron in an electric field of magnitude 50 V/cm, if e/m value of the electron is 
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In the rectangle, shown below, the two corners have charges q1 = –5mC and q2 = +2.0mC. The work done in moving a charge +3.0mC from B to A is (take =
)
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A thin uniform rod of mass M and length L is hinged at its upper end, and released from rest in a horizontal position. The tension at a point located at a distance L/3 from the hinge point, when the rod becomes vertical, will be
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Uniform rod AB is hinged at end A in horizontal position as shown in the figure. The other end is connected to a block through a massless string m as shown. The pulley is smooth and massless. Masses of block and rod is same and is equal to m. Then acceleration of block just after release from this position is
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A child with mass m is standing at the edge of a mery-go-round having moment as shown in the figure. The 
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A massless rod of length 2R can rotate about a vertical axis through its when w centre as shown in the Fig The system rotates at angular velocity the two masses m are at a distance R from the axis. The masses are simultaneously pulled to distance of R/2 from the axis by a force F directed along the rod. The new angular velocity of the system is
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