Recently Active Electricity And Magnetism Questions

an electric dipole is kept on the axis of a uniformly charged ring at distance of r/√2 frm the centre of the ring .the direction of dipole moment is along the axis dipole moment is p charge of ring is q n radius is r force ...

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A tiny electric dipole of dipole moment p is placed at a distance r from an infinitely long wire , with it's p normal to the wire. If the linear charge density of the wire is λ , the electrostatic force acting on the dipole ...

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A non conducting ring of radius r has charge Q. A magnetic field perpendicular to the plane of the ring changes at the rate of dB/dt. The torque experienced by the ring is? ...

*Image* the conductor XY has negligible resistance. a) current will flow thru XY if ε1/R1 ≠ε2/R2 B) current will flow thru XY if ε1=ε2 C) current will never flow thru XY . d) current will always flow watever be the cond ...

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two long parallel wires are at a distance 2d apart. they carry steady current flowing out of the plane of the paper, as shown. the variation of magnetic field B along the line XX' is given by *Image* *Image* which one do u th ...

an elliptical cavity is carved within a perfect conductor A positive charge q is placed at the centre of cavity The points A and B are on the cavity surface (a nearer to q) then a)electric field near A in the cavity =electric ...

two conducting spheres of radius r and 2r at very large separation . Each sphere is having charge Q These spheres are connected with a conducting wire of resistance R Then the current flowing in the wire at t=2 micro sec. is ...

if the source of e.m.f. and the ammeter were physically interchanged in a network the ammeter will show the same current here in the solution they have applied principal of Reciprocity of e.m.f. Please explain it ...

are we supposed to do the topic of earth's magnetism and magnetic material ................ as it is not mentioned in IIT syllabus ...

a current passses through an ohmic conductor of non uniform cross section .which are independent of cross section (a)charge crossing in a given time interval (b)drift speed (c)current density (d)free electron density ...

consider the infinite ladder such that r1 is in horizontal direction in upper side only n r2 in vertical direction .the voltage is halved after every section .comment on r1/r2 ...

what amount of heat is generated in a coil of resistance r due to chaarge q passing through it if the current in coil decreases to 0 uniformly during a time interval Δt ...

a wire of length l and 3 identical cells of negligible internal resistances are connected in series .due to the current the temp of wire is raised by Δτ in time t .N number of similar cells is now connected in series with a ...

hi friends...i knw u ppl are busy....but sum1 pl explain da scenario wen charge conservation comes into picture....ie kinda ... weak in electrostat...pl explain using 1 example...the conservation of charges in shells and conc ...

which of the following quantities do not change when an ohmic resistor cnnected to battery is heated due to current (a)drift speed (b)resistivity (c)resistance (d)no of free electrons ...

wat is the basic concept of max power generation and relation b/w r shunt n r load ...

*Image* 14 was easy but how to do questions 15 and 16?, ...

Three identical rings move with the same speed on a horizontal surface in a uniform horizontal mag. field normal to the plane of the rings. The first (A) slips without rolling , the second (B) rolls without slipping , & the t ...

Q. A parallel plate capacitor is made of square plates of side length a. A parabolic cylindrical slab of dielectric const. K is placed between the plates . The eq. of the parabola is x2=ay & the vertex of parabola touches the ...

a particle of mass 1 kg n charge 1/3 microc is projected towards a non conducting fixed spherical shell having the same charge uniformly distributed on its surface .radius of shell is 1 mm .distance b/w the line of motion n l ...

the dipole moment of a system of charge +q distributed uniformly on an arc of radius r subtending an angle ∩/2at its centre where another charge -q is placed is (a)2√2qr/∩ (b)√2qr/∩ (c)qr/∩ (d)2qr/∩ soln also ne ...

the e field ina region is given by E=4axy√zi+2ax2√zj+ax2y/√zkwhere a is apositive constant eqn of equipotetial surface (a)z=c/(x3y2) (b)z=c/(xy2) (c)z=c/x4y2) (d)none here c is a constant ...

two particles x n y of equal mass an unequal positive charge are free to move and are initially far away .With y at rest x begins to move towards it with inital velocity u .after long time (A)x ll stop n y ll move with veloci ...

4 charges are placed each on a distance a frm origin. -2q at +x axis 3q at +y axis -2q at -x axis +q at -y axis dipole moment of configuration is ?? ...

why is charge never stored in battery???? ...

Can conduction and displacement current coexist in the same region???If yes,give exxample ...