magnetic flux...induced emf...etc...

Consider a rectangular loop of length l (parallel to x) width w (parallel to y) total resistance R, is being pulled at constant force F=fx. If at tiem t=0 it is aligned with the front edge at x=0, has velocity vx, and the magnetic field everywhere is B= 0 x<0 B= BoZ x>0 solve and draw plots for the time dependence of: A) position of the front of the loop B) The magnetic flux, through the loop C) The induced emf in the loop D) The current in the loop E) The power dissipated in the loop F) The time needed for the loop to get all the way into the field- if it does. Hint- solve for the first 3 terms of position and its derivatives. Then find and solve the kinemat... click for more

The probelem belongs to electrostatics chapter and calculation is related to electric field and potential.

A static electric charge is distributed in a spherical shell of inner radius R_1 and outer radius R_2. The electric charge density is given by Rho=a+br, where, r is the distance from the center, and zero everywhere else. (a) Find an expression for the electric field everywhere in terms of r. b) Find expressions for the electric potential and energy density for rinfinity.

The problem deals with electrostatics with two plane-parrallel electrodes. The problem is to find current density.

Given two plane-parallel electrodes, space d, at voltages 0 and V_0, find the current density if an unlimited supply of electrons at rest is supplied to the lower potential electrode. Neglect collisions.

Calculation of force on a small charge element on the sphere having a uniform distribution of electric charge. In answer a figure is also provided.

An electric charge Q is uniformly distributed over the surface of a sphere of radius r.Show that the force on a small charge element dq is radial and outward and is given by dF=1/2 Edq, where, E=1/(4 Pi Epsilon_0)(Q/r^2) is the electric field at the surface of the sphere.

Understanding the electric field

An electron is accelerated eastward at 1.4x109 m/s2 by an electric field. Determine the magnitude and direction of the electric field.