Developing the Force on a moving charge

April 20, 2011

The equation

• |F| = |q| v B sin (φ)• F = |q|v x B• For the direction, you use the left-hand rule

(for negative particles) or the right-hand rule (for positive particles)

• The SI unit of the B-field is tesla [T] = V s m-2

• 1 T is a very strong field (the strongest permanent magnet is only ~5 T)

“The cross-product is weird.”

Nikola Tesla, Mad Scientist

(His eyes follow you)

Some of Tesla’s inventions• Alternating current (AC)• Induction Motor• Wireless Energy

Transmission (Tesla Effect)• Radio (before Marconi)

Not Nikola Tesla

• The Tesla Roadster, an all electric sports car

Magnetohydrodynamics (MHD)