Electricity and Magnetism Answers

What is the wavelength of a 3128.8 Hz pitch?

Using Maxwell's equation in free space,derive the wave equations for the z-component of electric field vector.

How many electrons per second pass through a section of wire carrying a current of 0.70 A.?

What is the current through an 8.0 omega toaster when it is operating on 120 V?

An electron gun in a tv set shoots out a beam of electrons. The beam current is 1.0 × 10 raised to -5. A. HOW MANY ELECTRONS STRIKE THE TV EACH SECOND ? B. HOW MUCH CHARGE STRIKES THE SCREEN IN A MINUTE ?

in a one-dimensional device, the charge density is given by pv = po*x/a. If E = 0 at x = 0 and V = 0 at x = a, find v and E

Physical meaning of differential form of Faraday's law of electromagnetic induction.

What is synchrocyclotron? How it is used to accelerate particles to a few hundred
MeV of energy? Explain.

A radio broadcasting station located in owerri has a frequency of transmitting between 535 and 1605khz at channel 4 and 8. The very high frequency television stations channel 2 and13 have between 54 and 216 megahertz, while the ultra high frequency stations channel 14 and 83 have between t470 and 890 megahertz. What is the wavelength equivalent of each of the station frequencies measured?

How much work is required to carry a charge of 3X10-5C from a point 50cm from a charge 2X10-4C to a point 20cm from it?

1. A point charge q1 is held stationary at the origin. A second charge q2 is placed at point a, and the electric potential energy of the pair of the charges is + 5.4 × 10 raise to -8 J. When the second charge is moved to point b, the electric force does on the charge does -1.9 × 10 raised to -8 J of work. What is the electric potential energy of the pair of charges when the second charge is at point b.

2. How much work is needed to assemble an atomic nucleus containing three protons ( such as Be ) if we model it as an equilateral triangle of side 2.00 × 10 raised to -15 m.

A thin metallic shell of radius 40 cm has a charge of -25 nC on it. At the center of the sphere is a point charge of 35 nC. What is the electric field 50 cm from the center of the shell?
400 N/C outward
560 N/C outward
360 N/C outward
360 N/C inward
560 N/C inward