Videos:

http://www.learnapphysics.com/apphysicsb/magnetism.php
http://www.learnapphysics.com/apphysicsb/capacitance.php

Explain right hand rule

This is a very good video for Right hand rule:
http://youtu.be/LK7hv4LX3ys

Magnetic field using right hand rule

for electron or proton movement.

Capacitance: Introduction to the capacitance of a two place capacitor

Right Hand Rule:


Notes:

https://docs.google.com/document/d/1BaKno7lyakGufVmKqFog9NZ_flIEpRgbPPXXtJK4XLY/edit?authkey=CNukxK8F
Electric Force:
F(elec) = |q| E
(E is electric field strength in V/m)

Electrical Potential energy:
U = -q E delta d
d is distance.

V = E Delta d

Q1d1 = Q2d2

protonelectron.png

The Electromagnetic Force

Watch the video below:
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One of the four fundamental forces, the electromagnetic force manifests itself through the forces between charges (Coulomb's Law) and the magnetic force, both of which are summarized in the Lorentz force law. Fundamentally, both magnetic and electric forces are manifestations of an exchange force involving the exchange of photons . The quantum approach to the electromagnetic force is called quantum electrodynamics or QED. The electromagnetic force is a force of infinite range which obeys the inverse square law, and is of the same form as the gravity force.
external image emfor.gif


The electromagnetic force holds atoms and molecules together. In fact, the forces of electric attraction and repulsion of electric charges are so dominant over the other three fundamental forces that they can be considered to be negligible as determiners of atomic and molecular structure. Even magnetic effects are usually apparent only at high resolutions, and as small corrections.


More Right Hand Rule:

When the charge is negative use the left hand instead of the right hand.
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Magnetic Field Formulas
(Direct from Maxwell)
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These three simple formulas can be derived directly from Maxwell's fourth equation, or Ampere's Law.
Magnetic field due to an infinite, straight current filament
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B is the magnetic field, in teslas. The direction of the field is tangent to a circle on a radius r (in meters) from the wire.
external image Image22.gifis the permeability constant (1.26x10-6 H/m)
i is the current in the wire, in amperes.
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Field inside a straight, infinite, air core solenoid
external image Image23.gif
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B is the magnetic field inside the solenoid, in teslas. The direction of the field is parallel to the axis of the solenoid. There is no field outside the solenoid.
external image Image22.gifis the permeability constant (1.26x10-6 H/m)
i is the current in the wire, in amperes.
n is the number of turns of wire per unit length of the solenoid, in 1/meters.
external image line1.gif
Field inside an air core toroid coil
external image Image25.gif
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B is the magnetic field, in teslas. The direction of the field is tangent to a circle on a radius r (in meters) from the center of the toroid.
external image Image22.gifis the permeability constant (1.26x10-6 H/m)
i is the current in the wire, in amperes.
N is the total number of turns of wire in the toroid.
protonelectron.png

Labs:

Lab 1

Lab 2

Lab 3

Lab 1

Lab 2

Lab 3