1)/2)/3) I have the Mag field B, the charge q, and the velocity v.
To find the force I cross q*v with B.

4)I have the current I, the Mag field B, with the field in the x-z plane. I find the force using B = F/(I*l)?

5)I have the area A, length l, voltage V, resistivity (rho)and Mag field B.
R = (rho)*l/A. I can find the torque by t = uXB or t = NIAB. Do I manipulate some variables to find the number of loops based off the Area and length?

6) I have the velocity v, radius r, charge q, and mass m. I can find the strength of the Mag Field using qvB=mv^2/r

7)Not sure how to use the number of turns to find the current here...

Force will act only on portion of segment along - x axis. Portion of wire 7.2 m long parallel to the magnetic field will have no force acting on it. Net force is the force which is acting on segment that is 6.0 m along - x axis.

F = BiL sinx ( x = 90 degree, B is along positive z axis and L is parallel to x ...

Solution Summary

The solution examines the magnetic fields and forces.

Write down the (real) electric andmagneticfields for a monochromatic plane wave of amplitude E_0 angular frequency w and phase angle zero that is traveling the in the (0,1,1) direction and polarised in the x-hat direction.
Note: You are not given bold k or k so even the 'space' part has to be in terms of w.
(see attached

At one instant, the electric andmagneticfields at one point of an electromagnetic wave are:
E = (220i + 300 j - 50 k) V/m and
B = Bo(7.9 i - 7.9j + ak) muT
1. What is the value of a?
2. What is the value of Bo?
3. What is the Poynting vector at this time and position? Find the

A magnetic field has a magnitude of 12 T. What is the magnitude of an electric field that stores the same energy per unit volume as this magnetic field?

Point P is midway between two long, straight, parallel wires that run north-south in a horizontal plane. The distance between the wires is 1cm. Each wire carries a current of 1A toward the north.
A) Find the magnitude and direction of the magnetic field at point P.
B) Repeat the question if the current in the wire on the e

Show how an undeflected trajectory for a moving charge is obtained with appropriate crossed E and B fields. Draw seperate diagrams to illustrate your answer for a positive charge and a negative charge.

A single square loop of wire 21.0 cm on a side is placed with its face parallel to the magnetic field between the pole pieces of a large magnet. When 6.21 A flows in the coil, the torque on it is 0.315 m·N. What is the magnetic field strength?

See attached file for complete formulation of the problem.
The problem deals with the electric andmagnetic field behavior at an interface.
The first question asks to show that using Maxwell's equations we can obtain the wave equation for the fields.
The second question asks as to draw the fields at the interface.
The th

Part 1:
Solenoids produce magneticfields that are relatively intense for the amount of current they carry. To make a direct comparison, consider a solenoid with 56 turns per centimeter, a radius of 1.15 cm, and a current of 0.110 A. Calculate the magnetic field at the center of the solenoid.
Part 2:
What current mus

The Earth's magnetic field is essentially that of a magnetic dipole. If the field near the North Pole is about 1.0x10^-4 T, what will be its approximate value 18,000km above the surface at the North Pole?