Questions from Electronics

Q: Notice the following parallel: / Thus, the transcription

Notice the following parallel: Thus, the transcription turns an electrostatic problem into an analogous magnetostatic one. Use this, together with your knowledge of the electrostatic results, to reder...

Q: Compare Eqs. 2.15, 4.9, and

Compare Eqs. 2.15, 4.9, and 6.11. Notice that if ρ, P, and M are uniform, the same integral is involved in all three: Therefore, if you happen to know the electric field of a...

Q: At the interface between one linear magnetic material and another, the

At the interface between one linear magnetic material and another, the magnetic field lines bend (Fig. 6.32). Show that tan θ2/ tan θ1 μ2/&Icir...

Q: A magnetic dipole m is imbedded at the center of a sphere

A magnetic dipole m is imbedded at the center of a sphere (radius R) of linear magnetic material (permeability μ). Show that the magnetic field inside the sphere (0 < r ≤ R) is / What is the field outs...

Q: Calculate the volume integral of the function T z2 over the tetrahedron

Calculate the volume integral of the function T z2 over the tetrahedron with corners at (0,0,0), (1,0,0), (0,1,0), and (0,0,1).

Q: You are asked to referee a grant application, which proposes to

You are asked to referee a grant application, which proposes to determine whether the magnetization of iron is due to “Ampère” dipoles (current loops) or “Gilbert” dipoles (separated magnetic monopole...

Q: Find the force of attraction between two magnetic dipoles, m1 and

Find the force of attraction between two magnetic dipoles, m1 and m2, oriented as shown in Fig. 6.7, a distance r apart, (a) using Eq. 6.2, and (b) using Eq. 6.3.

Q: Derive Eq. 6.3. [Here’s one way to

Derive Eq. 6.3. [Here’s one way to do it: Assume the dipole is an infinitesimal square, of side ε (if it’s not, chop it up into squares,...

Q: A uniform current density J = J0 zˆ fills a slab straddling

A uniform current density J = J0 zˆ fills a slab straddling the yz plane, from x = −a to x = +a. A magnetic dipole m = m0 xˆ is situated at the origin. (a) Find the force on the dipole, using Eq. 6.3....

Q: Of the following materials, which would you expect to be paramagnetic

Of the following materials, which would you expect to be paramagnetic and which diamagnetic: aluminum, copper, copper chloride (CuCl2), carbon, lead, nitrogen (N2), salt (NaCl), sodium, sulfur, water?...