Real physics test

The magnitude of the force equation

F = |q| x vB sin(theta)

Sin(theta) = 0 when

it is parallel or anti parallel to the surface vector

The right hand rule

Open the right hand so that the thumb points toward v and the fingers should point towards B. The force will be directed out of the palm.

The magnetic force exerted on a wire

F = I L x Bsin(theta)

The Biot-Savart law

B = mu0 I/4 pi r

the magnetic field at any point in space which is a distance r from current I

The magnetic for per unit length between very long parallel conductors

F/L = mu I1 I2/4 pi r²

In the case of very long parallel conductors, what are their attraction laws

Currents going in the same direction attract; currents going in opposite directions repel

Flux formula for a coil

phi = N B A cos(theta)

Lenz’s Law

epsilon = - change in phi/ change in t

Alpha particles

the nuclei of helium atoms

Beta particles

fast moving, high energy electrons

Faraday’s Law

- epsilon = N dphi b/dt

or the change of magnetic flux over the change in time