Recently Active Electricity And Magnetism Questions

Please help me out people. Charges flow only when there is a potential difference b/w two points. Also in a wire, there is a potential difference b/w two points only when there is an electric component b/w them. So in an ordi ...

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Somebody............help.............doubt in KVL and KCL............someone answer this..........Im tryin this from a long time.......................... APPLY KCL AND KVL HERE....... *Image* ...

Q1)Two positive charges +Q are held fixed a distance d apart.A particle of -ve charge -q and mass m is placed mid way between them nd thn given a small displacement perpendicular to the line joining thm nd released.The partic ...

A block of mass 4m and a conducting square loop of mass m are connected by light insulating string passing over smooth pulley.The plane of loop is perpendicular to the magnetic field,as the system si relaesed. *Image* a)the b ...

A uniform charge density σ is given to a non conducting uniform disc of radius r,what is the potential of a point at the circumference ...

A non conducting rod of length l and charge q is rotated along an axis passing through the center of mass with ang velocity ω,What is the mag moment of the rod? (Ans:qωl2/24) can anyone post the solution,i'm not getting the ...

I want some one to post information on this method of solving problems . thanks in advance. ...

For finding the electric field at the center of the dipole which formula will u apply Equitorial one or Axial one....???? ...

2 identical loops of metal wire are lying on a smooth table without touching each other .lopp A carriesa current which increases with time . In response loop B, A) remains stationary. B) moves away from A. C) moves towards A. ...

An elliptical cavity is carved within a perfect conductor.A positive charge q is placed at the center of the cavity. the points A and B are on the surface as shown A(a,0) and B(0,b) where a and b length of the major axis and ...

WHAT IS AN IDEAL ELECTRIC DIPOLE....... ...

i have concluded that this pbm cant be solved .if u have solved the pbm please give ur soln.i have seen the soln for this pbm in two buks which was wrong one A parallel capacitor has the space between the plates filled with a ...

can anyone please explain when two conductiong spherical shells hold charge, potential 1)difference varies on changing the charge on the inner spherical shell 2)difference between their surfaces is independent of the charge o ...

If the internal resistance of a cell is propotional to current drawn from cell.Then plot the variation of terminal potential difference of cell with current drawn from source. ...

*Image* Find eq. resistance b/w A and B ...

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Q1) Calculate the force on charge q1 in the fig. Given: q1=-1.0*10-6 C ;q2=3.0*10-6C ;q3=-2.0*10-6C ; d12=0.15m ;d13=0.10m and θ=30° *Image* ...

n cells each of emf E and identical resistance r are grouped into sets of cells connected in series.The (n/K) are then connected in parallel to a load resisance R.Then find max. power delivered. ...

Q Fig. shows three cases: in all the cases the circular part has radius R and straight ones are infinitely long for same I.The magnetic field in the three cases has the ratio? Fig follows......... ...

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why electric field lines are not intersecting ...

Three balls of radii 'R' are placed at the corners of an equilateral triangle of side 4R. Ball 1 is given charge +Q and balls two and three are earthed. A fourth identical ball placed very far from this system is connected to ...

*Image* four equal and identical charges are placed at the vertices of a square There is a netforce act upon each charge q.but it is not accelerated why? ...

Pls forgive me if this question is idiotic beyond compare. But that's what this series is all about - SILLINESS PERSONIFIED [4] Here goes: If you connect a motor and generator in such a way that one's output is the ot ...

A solid spherical region having spherical cavity(concentric) whose diameter R is equal to radius of spherical region ,has a total charge Q.Find electric potential at point at distance x from centre . ...

Two long parallel conducting horz rails are conneted by conducting wire at one end.A uniform magnetic field B(directed vertically downwards) exists in region of space.A light uniform ring of diameter d which is practically eq ...

The speed light maybe determined by an electrical circuit using low frequency ac fields only. Consider the arrangement shown in the Fig. (4). A sinusoidally varying voltage V0 cos(2Ï€ft) is applied to a parallel plate capacit ...

GO THRU THIS ONE AND TRY SOLVING IT OUT..... *Image* ...