Electricity and Magnetism Answers

Two charged particles are a distance of 1.82 m from each other. One of the particles has a charge of 6.89 nC, and the other has a charge of 4.18 nC.
(a)
What is the magnitude (in N) of the electric force that one particle exerts on the other?

"A fixed voltage is connected across parallel plate capacitor. Does the electric field intensity in the space between the plates depends on permittivity of the medium? Does the electric flux density depends upon the permittivity of the medium?

An audio amplifier drives a series RLC circuit consisting of an 8ohm loudspeaker, a 160µF capacitor and a 1,5mH inductor. The amplifier output is 15V rms at 500 Hz.

a) calculate power delivered to loudspeaker
b) calculate maximum power that amplifier could deliver
c) how capacitor would change for resonance to happen?

Please assist.

Write elecric field due to point charge.

What is internal resistance of cell or bettry

Explain the potential due to point charge.

Write lenz first law?

A copper wire has a diameter of 4.00mm. If the drift speed of the electrons in the wire is 0.0002 m/s, calculate the current flowing in the wire. Assume each copper atom contributes two free electrons to the current. The density of copper is 8.93 g/cm^3 and it's molar mass is 63.5 g/mol.

A metal sphere has a charge of +8.0 µC.
What is the net charge after 6.0×10
13
electrons have been placed on it?

(a) State the laws of electrostatics in integral form.
(b) A uniformly charged long cylinder of radius a and length L has
total charge q inside its volume.
What is the direction of the electric field at points outside the cylinder?
Find the electric field inside and outside the cylinder.