Recently Active Electricity And Magnetism Questions

1.Positive charge Q is distributed uniformly over a circular ring of radius R.A particle having mass m and a negetive charge q,is placed on its axis at a distance x from the centre.Find the force acting on the particle and it ...

Point charges q and --q are located at the vertices of a square with diagonals 2l as shown . Find the magnitude of the electric field strength at a point located symmetrically with respect to the vertices of the square at a d ...

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1.A point charge is placed at the origin.Calculate electric flux through the open hemispherical surface:...... {x-a}2+y2+z2=a2;x≥a Ans.q/2ε0*{1-1/ 2 ) 2.A point charge is located on the axis of a disc of radius R at a dist ...

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Do show thw method!!! *Image* ...

how to solve this?? if the rod is cylindrical..how can we find the min flux? ...

*Image* gven a loop subjeted to inawrd perpendicular magnetic field. fnd direction of current...please explain. ...

1.A small block of mass m is kept a smooth inclined plane of angle 30° between two charged vertical sheet.Electric field E exists between the verticle sides of the walls of the elevator.The charge on the block is +q.Elevator ...

*Image* If a positive point charge q is kept at the center of a distribution ( equilateral triangle with side a) then what is the flux through each of the sides of the triangle? I want to know the gaussian surface we would co ...

*Image* If on the x axis, charge 10 microcoulomb is kept at 1 unit, 20 microcoulomb at 2 units, 30 microcoulomb at 3 units...and so on till infinity. What is the net electric field experienced by a positively charged particle ...

*Image* If a cylinder of mass m and length l is rotated about its axis with an angular velocity W, then what is the electric potential difference between the outer surface and the center of the cylinder. The cylinder has no c ...

If angle of dip in two perpendicular planes is δ1 and δ2 ,then prove that cot2δ1+cot2δ2 =cot2δ where δ is true angle of dip. ...

two identical parallel plate capacitors are connected in parallel to a 3V battery.the battery is disconnected and the two capacitors are joined in series.what is potentiasl diference across combination? ...

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A magnetizing field of 1200 A/m produces a magnetic flux of 2.4 ? 10-5 weber in an iron bar of cross-sectional area 0.2 cm2. Calculate the permeability and susceptibility of the bar. ...

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Find the force experienced by the the charge on unit area of an arbitrary conductor if the surface charge density is σ. ...

a thin semicircular ring has a +ve charge q uniformly distributed over it. the net field at the centre is ..... i did it like this E=o∫Π1/(4Πε0)* q/(2πr)*rdθ sinθ/r2 j =q/(2π2ε0r2) j but the ans is negative of that ...

1..two capacitors A AND B 3μF and 2μF respectively are charged to p.d of 100V and 180V . the plates of capacitors are connected with one wire from each with free ..the upper plate of A is +ve ,bB is -ve . an ..an uncharged ...

1. Two dipoles of dipole moments p each r placed on points A(a,0) and B(-a,0) as shown in figure.How much work is done in rotating both d dipoles with 90° angle in clockwise direction? *Image* 2.A block of mass m and charge ...

What is the maximum work that a constant magnetic field B can perform on a charge q moving through the field with velocity v? give full soln please!! ...

If a sphere of bad conductor is given a charge then it is distributed on outersurface or inner surface?? ...

*Image* now look into the problem 1.no where written ISOLATED system 2.following ELECTRCI field configuration seems like lines are getting diverged after some distance on both side CONCLUSION::::::::::[considering the level J ...

A charge Q is placed at each of the opposite corners of a square . A charge q is place at each of the other two corners. If net electrical force on Q is zero then Q/q equals : a) -2/ 2 B) -1 C) 1 D ) -1/ 2 *Image* ans........ ...