Electricity and Magnetism Answers

A particle of charge 3 x 〖10〗^(-9) C is located at point (0, 0) in a certain coordinate system. Assuming all lengths are in meters, calculate the potential at the following points A (3, 3) and B (0, 2). How much work is needed to take a particle of charge 2 x 〖10〗^(-9) C from point A to point B?

Two spheres, P and Q with charges of +4 microcoulomb and -6 microcoulomb are brought into contact and separated again.
What is the charge on each sphere after contact?

An interesting (but oversimplified) model of an atom pictures an electron “in orbit” around a proton. Suppose this electron is moving in a circular orbit of radius 0.10 nm (1.0 x 10-10) and the force that makes this circular motion possible is the electric force exerted by the proton on the electron. Find the speed of the electron.

cubical gaussian surface has an electric dipole of equal size put opposite signs separated by a distance 1 at its geometric center .The total electric flux of all six faces of the cube is.....?

: Consider a sphere of radius 5 mm placed in free space containing a total amount of charge ‘Q’. The electric potential due to the distribution of the charge is V = 7 R2 Sin θ Cos ϕ. Find out the numeric value of the charge Q enclosed by the surface.

Consider a sphere of radius 5 mm placed in free space containing a total amount of charge ‘Q’. The electric potential due to the distribution of the charge is V = 7 R2 Sin θ Cos ϕ. Find out the numeric value of the charge Q enclosed by the surface.

a toroid is madeof 2 000 turns of wire of radius 2.00 cm formed into a donut shape of inner radius 10.0 cm and the outer radius 14.0 cm. when a 30.0 A current is present to the toroid,determine the magnetic field at a distance of 11.0 cm from the center of the toroid .

A wire carries a current of 10A in a direction 30º to a uniform magnetic field of
0.30 T. Find the force on 5.0 m of the wire.

A uniform magnetic field 0.50T is directed at an angle of 60° to the plane of a 100 turn, rectangular cooper coil of length 0.04m and width 0.05m. The diameter of the copper wires which makes up the coils is 1.00mm and the resistivity of copper is 1.7 * 10^-8 ohmmeter. The magnetic field through the loop decreases to zero in 0.3s. Determine
(I.) The initial flux through the coil.
(ii.) The average induced e.m.f in the coil as the field decreases