Recently Active Electricity And Magnetism Questions

A deuteron and an α-particle are placed in an electric field. If F1 and F2 be the forces acting on them and a1 and a2 be their acclerations respectively,then A. a1=a2. B. a1 ≠a2. C. F1=F2 D. F1≠F2 What exactly is a deute ...

Find the equivalent capacitance between A and B..each capacitance is c..Options-- a. C. b. 2C c. C/2 d. none of these. I got C but its wrong according to soln. *Image* ...

There are 2 concentric metal shells of radii r1 and r2(>r1). If the outer shell has a charge q and the inner shell is grounded,,the charge on the inner shell is - _____ ? Pls explain y charge is not 0 ?? ...

*Image* is this possible ...

A few conceptual doubts -: 1) In the gravitational attraction between the earth and a stone, can we say that the earth lies in the gravitational field of the stone? If yes how is the gravitational field due to the stone relat ...

a charge q wit mass m moves in a non uniform mag field in a plane perp. to the field .....B=B0/x.......mag field is along y axis ...... particle strats frm x=a wit v0 dir. along x axis ...... how far will particle travel bfr ...

Is the value of current i=nAe^2VT/2ml or i=nAe^2VT/ml ...

*Image* Q1)In the circuit shown in figure switch S is closed at time t=0.Let i1 and i2 be the currents at any finite time t ,then the ratio i1/i2 a. is constant b.increases with time c. decreases with time d.first increases a ...

Q1. A metallic shell of radius r is surrounded by an isotropic dielectric of dielectric constant k upto a radius R. Find the capacitance of this system. Q2. A metallic sphere of radius a is surrounded by two concentric metall ...

*Image* Two charges +q1 and -q2 are placed at a and b respectively. A line of force emerges from q1(at an angle α with line ab) and terminates at -q2. At what angle will it terminate (β) at -q2 ?? ...

Can we get expression for magnetic field due to a straight current carrying wire:- μi(cos θ1-cosθ2)/4dπ using ampere's law? Please prove... ...

*Image* A parallel plate capacitor of area A and seperation d is filled with two wedges of dielectric of constants K1 and K2. What is the equivalent capacitance? ...

tell me the source from where i can get some idea about "dependence of electric and magnetic fields on the basis of reference frame" ...

Show that in an electric circuit when a current gets divided into a number of branches it does so in such a way that the heating effect is minimum? ...

A cell of voltage E is connected to 2 batteries of resistance R each. Everything is connected in series. A capacitor of capacitance C is connected parallel to one of the batteries of resistance R.The switch is closed at t=0. ...

Stmnt 1: The flux through a gaussian surface that encloses a capacitor is zero Stmnt 2: The battery sends equal amounts of positive and negative charges to the two plates of an uncharged capacitor ...

A small charge q is place at the corner of a cube.Find out the flux passing through each side of the cube . ...

Q. Two spheres of radii R1 and R2 are connected by a wire. What is the equivalent capacitance of this system ...

*Image* Find the equivalent resistance of the following group of resistances between A and B. Each resistance of the circuit is R ...

A very thin round plate of radius R carrying a uniform surface density x is located in vaccum. At a dist l from the platers centre (along its axis), find the field and potential.... ...

from a supply of identical capacitors rated 8μF, 250 V ,the minimum number of capacitors required to form a composite 16μf ,1000V capacitor is???????????? ...

if V=0,E must be zero..................... is above statement correct?? ans. is it is incorret................but why i can't get it............if we differentiate a constant we get zero only na.............then y...........p ...

*Image* This is an equilateral triangle of side "a". The equivalent resistance between AB, BC and CA is R. the inner triangle is of length a/2 and resistance R/2. This continues till infinity. Find the equivalent resistance b ...

A thin wire ring of radius R carries a charge q. The ring is oriented parallel to an infinite conducting plane and is separated by a distance l from it. Find: (a) the surface charge density at the point of the plane symmetric ...

*Image* find the EQ. CAPACITANCE ...

a triangle is constructed using wires ..ab, bc,ca of same material and of resistance ....alpha ,2alpha,3alpha rescptivly....Another wire of resistance alpha/3 frm A can make sliding contact wid wire BC . find maximum resistan ...

why mica should be used to increase capacitance of a parallel capacitor between plates of a sheet???????? ...

A point-like electric dipole (dipole moment = p) is kept at the origin, pointing along the +z direction. A point charge q having mass m is released at rest from a point on the xy plane at a distance R from the origin. Assumin ...

A capacitor of capacitance 500μf is connected to battery through a 1000KΩ resistor .the charge stored on the capacitor in the first 5 sec is larger than the charge stored in the next;;;; options: 5sec 50sec 500sec 5000sec ...

the energy of a uniformly charged non-conducting sphere having charge Q and radius R ????????????explain ...