Recently Active Electricity And Magnetism Questions

*Image* Find the flux of the charge q through the upper cap of the cylinder....!!!. (the charge q is kept on the bottom surface of the cylinder....) assume the height to be h and the radius to be r ...

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*Image* The resistance of all the wires b/w any two adjacent dots is R. Then Find the equivalent resistance b/w A and B as shown in the figure. ...

gravtational potential is a.decreases with increase with height??? TRUE OR FALSE n field decreases with increase with height TRUE OR FALSE (SOURCE Brialliant part test 3.paper II.question 49) ...

*Image* Charge is spayed onto a large non conducting belt above the left-handed roller as shown in the above figure. The belt carries the charge density s , as it moves with speed v b/w the rollers as shown. The charge is rem ...

I dont know how many times this one has been discussed here.....but the reason for posting here is that I just found 2 good solns to this one..... Find resistance b/w A and B *Image* Lets see who posts all 3.... Start with th ...

Find the resistance between any two of the adjacent sides of the cube. ρ is the specific resistance. Cube length = L ...

The axle of a wheel lies on the surface of an oil bath, and four equal charges q are spaced equally around the perimeter. The fixed charge Q repels all four charges q. What do you predict will happen to the wheel? *Image* ...

A nice problem.. Simple loop eqns... try it *Image* ...

*Image* A conducting ring of radius L=2m is placed on x-y plane, having its centre at the origin. A uniform magnetic field 5T(-k) exists in the space. A conducting rod PQ of mass M & length 2L is placed along the diameter of ...

a capacitor C is charged through a resistance R by a batt of emf E by closin switch at t=0.find amt of heat energy dissipaed in d resistor R durin d 1st tym constant?? ...

An infinite thread of charge density λ lies along Z axis.Find the potential difference between the points (4,3,4) and (3,4,0) ...

Two concentric cylinder have a radius a and b. The charge on the cylinder is +q and -q. Another cylinder of radius (a+b)/2 is introduced between the two. The charge on this cylinder is +q/2. What is the capacitance of the arr ...

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Q1) when a dielectric slab is inserted between the plates of a parallel plate capacitor the energy of the system decreases.What can be said about the force on the slab exertd by the feild? Q2) A positive charge of 2*10^-8 cou ...

*Image* i want answer to Q7 Q8 for targetiitians ...

THE RMS CURRENT FLOWING THROUGH THE INDUCTOR AND CAPACITORARE 0.6A AND 0.8A RESPECTIVELY.THEN CURRENT COMING OUT OF SOURCE *Image* ...

the impedance f a series circuit in an ac circuit is ...

Consider building the the following resistor.Start with a sqr of length L.Connect the centers of each side to form another square. Connect the centers of each square to form yet another square,and so on,to infinity. What is t ...

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not my dbt *Image* ...

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+ve plate of a capaciyor given a charge of 2*10^-8 c while -ve plate given a charge of -1*10^-8C ... Capacitence of Capacitor is 1.2 *10^-9F... Calculate PD ...

a non conducting rod - total charge q and length l is rotated about centre of mass with constant angular velocity w.magnetic moment of rod=????? my method:-i took a small element dx at a distance x from centre and calculated ...

*Image* how come then a neutral sphere get attracted to the positive charge....... it is a self made question......... i know why it does not......just thought of sharing with u all ...

*Image* Find the eq resistance and the current i. ...

1 . A wire carrying a current i is kept in X-Y plane along the curve y=A sin(2Πx/λ) .A magnetic field B exists in the z-direction.FInd the magnitude of the magnetic force on the portion of the wire between x=0 and x=λ 2.A ...