Electricity and Magnetism Answers

We have a conductor outside homogeneous magnetic field. The length of a conductor is 1m, the strength of magnetic field 1T. We measure emf voltage at the ends of a conductor. Now we will push the conductor inside a magnetic field bz speed 1m/s parpendicullary, so we will start measure voltage 1V.
The question is how fast the voltage will increase to its maximum 1V. I know the time will be very small but it will not be definitely zero. What will be the curve of increasing voltage and is it constant or it will depend on a speed, magnetic field strength or conductor length in any way? This is essential for my simulator I am working on, which works with speed of the light resolution so even inter-electrons relations should be solved in detail...

Charge of a uniform density 8 nC/m^2 is distributed over the entire xy plane. A charge of uniform density 5nC/m^2 is distributed over the parallel plane defined by z=2m. Determine the magnitude of the electric field for any point with z=1

We have a homogeneous magnetic field of strength 1T.
There is a copper SQUARE conductor, moving by constant speed 1m/s in a direction parpendicullar to magnetic field lines, so we can measure inducted electromotive force at the terminal ends of a conductor.
Effective length of a conductor inside a field is 1m.
What is the voltage measured between conductor terminals if:
1) Width of conductor is 1cm, height is 1mm
2) Width of conductor is 1mm, height is 1cm
3) Width and height of conductor is 1mm x 1mm (the length is 1m in all three cases)

Magnetic flux may be varied by

A long solenoid (1000 turns/m) carries a current of 25 mA and has an inside radius of 2.0 cm. A long wire which is parallel to and 4.0 cm from the axis of the solenoid carries a current of 6.0 A. Determine the magnitude of the magnetic field at a point on the axis of the solenoid.

An emf induced by rotating a 1000 turns, 20.0 cm diameter coil in the earth's 5.00×10^-5 T magnetic field. What average emf induced, given the plane of coil is originally perpendicular to the earth's field and is rotated to be parallel to the field in 10.0 ms

Prove ampere's circuital law for a long straight wire carrying a current I

The relative permittivity of ammonia measured at 273 degree Kelvin and 373 degree Kelvin at one atmosphere is 1.00834 and 1.00487 respectively. Calculate the permanent dipole moment for the gas. Find also the radius of the molecule, assuming the polarizability to be the same as that of a conducting sphere.

[img]https://upload.cc/i1/2020/03/25/EN0FM7.jpg[/img]



the question is in the picture,R=4