Determining the flux of an electric field. Solution in JPG format.

A charge Q sits at one corner of a cube. What is the flux of the electric field through an opposite face?

Determining surface charges and eletric fields in a spherical conductor. Solution in JPG format.

Consider a spherical conductor of radius R. Inside of it are two spherical cavities A and B, with radii a and b, respectively. Each cavity contains a point charge qa and qb, respectively. Find the surface charges for all three surfaces (R, the outer surfaces of the conductor, and the surfaces of the inner cavities A and B) and t ...continues

Application of Biot Sarvat's Law.

Determine the magnitude and direction of the magnetic field at the origin in the case of two current loops as shown in the figures. See attached file for full problem description.

Determining the magnetic field at an axial point from the center of a current carrying loop. Solution in MS Word.

A circular loop of wire of radius R in the xy plane is carrying a steady current I. Calculate the magnetic field at an axial point P, a distance from the center of the loop.

Electromagnetism Problems

1.) A coaxial cable consists of central conducting wire embedded in a cylindrical insulating core, which is then surrounded by another outer conducting cylinder usually made of wrapped aluminum foil or copper braid. Suppose such a cable carries a current of 36.5A flowing in one direction along the wire and 2.19A flowing in the o ...continues

Working with electric forces, field and potentials.

Two positive charges, charge q0 are fixed on the x axis at positions +a and -a. a) What is the Electric Field anywhere in the (x,y) plane, at position (x,y)? Be sure your answer clearly denotes the vector nature of the electric field. b) What is the electric potential at position (x,y)? c) A third charge, q3 , (mass m3 ...continues

Electric and potential fields...(solid conducting core)

Consider a concentric spherical system made up of the following parts: A solid conducting core radius a with total charge Qc , surrounded by a conducting shell of inner radius b and outer radius c. The shell has total charge -Qc . For each of the appropriate regions, find Qenclosed , E and V. Make the appropriate set of gr ...continues

light

1.) A woman 1.8m tall, standing 1.24 meters from a 1m high vertical mirror can see her entire image in it. Her eyes are 144 mm below the very top of her head. How high above the floor is the bottom edge of the mirror? 2.) A beam of light impinges on the top surface of a 7.30 cm thick parallel glass (n=1.5) plate at an angle o ...continues

Understanding resistivities of paper and wood.

What is the resistivity of paper? What is the resistivity of wood?

Calculating the total energy of photons from a helium-neon laser.

A helium-neon laser gives off red light with a wavelength of 632.8 nm (nanometers). What is the energy of the photons coming out of the laser? (Hint: the speed of light is 3x10 [to the 8th pwr.] m/sec.) SIDE NOTES: We have been using very basic equations in this class, it is not advanced or anything. I do not know wh ...continues