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a parallel plate capacitor is charged to a certain p.d. A slab of thickness 3mm is inserted between the plates and it becomes necessary to increase the distance between the plates by 2.4mm to maintain the same p.d.The dielectric constant of the slab is
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a dielectric is introduced between the elements of the condenser kept at constant potential difference.then the charge on the condenser will increase or decrease.
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when one electron is taken towards the other electron,then the electrostatic energy of the system decreases,increases,remains unchanged or becomes zero.
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a body is positively charged then its mass will increase slightly,decrease slightly,remains same or it will become zero.
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sin(x+y)=log(x+y) then sinxcosy+cosxsiny=log(x+y) then dy/dx(cosxcosy-sinxsiny)+(cosxcosy-sinxsiny)=1/x+y(1+dy/dx) ,then [cos(x+y)-1/x+y]dy/dx=1/x+y-cos(x+y) then dy/dx= -[1-cos(x+y)(x+y)/1-cos(x+y)(x+y)] then dy/dx= -1
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i think the answer has to be zero.becase if the terminal of the last vector coincides with the initial point of the first vector,then its sum will be zero.
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in one gram of solid,there are 5 10raised21atoms.if one electron is removed from every one of 0.01%of atoms of the solid,charge gained by the solid would be(A)+0.08C,(B)0.8C,(C)-0.08C,(D)-0.8C
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three identical charges are placed at the corners of an equilateral triangle.if the force between any two charges is F ,then net force on each charge will be?(a)root2.F,(b)2F,(c)root3.F,(d)3F
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four charges each of magnitude q ,are lying at the four corners of a square of side a.how much charge should be placed at centre of the square so that the whole system remains in equilibrium?(A)q/4(2root2+1) ,(B) -q/root2,(C)-2root2q,(D)-q/4(2root2+1)
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the property of a particle which produces electrical influence is called as charge.
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the property of a particle which produces electrical influence is called as charge.
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a given charge situated at a certain distance from a short electric dipole in the end-on position expiriences a force F. if the distance of the charge is doubled ,the force acting on the charge will be (A)2F,(B)F/2,(C)F/4,(D)F/8.
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your answer is correct.but will you please explain me how you got that answer.
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if O be the circumcentre and O' be the orthocentre of a triangle ABC then vectorOA+vectorOB+vectorOC is equal to 3vectorOO' or 2OO' or OO' or O'O.
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the gravitational potential due to earth is minimum at (a)the centre,(b)the surface,(c)a distance equal to 100 times the radius of the earth,(d)infinite distance
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