Magnetic Field

Procedure: Forces between two currents

Two wires carrying current in the same direction attract each other, and they repel if the currents are opposite in direction.

Source

Procedure: Test Electric Current

Used to analyze the strength of the magnetic field generated by multiple currents.

1. Imagine that there is a current at the coordinates to be analyzed
2. Calculate the resultant force
3. Use Left-hand rule to determine the direction of the magnetic field; \( F \propto B \propto I \)

NCEE

1

Solution

2

Circular motion

Velocity deflection angle = central angle = 2 * chord tangent angle (or \(2\pi\) - 2 * chord tangent angle)

2

If the point of the center of the circle is on the lines of the enter and/or exit velocities

Minimal circle

diameter of the circle = chord length of the motion

area of mimimal rectangle = height of ircular segment * chord length

NCEE

Procedure: Decompose Lorentz force

Wikipedia

\( F_x = q(E_x + v_y B_z - v_z B_y ) \)

For NCEE:

\( q l_x B = \Sigma q v_x B t = m \Delta v_y \)

\( q l_y B = \Sigma q v_y B t = m \Delta v_x \)

NCEE

2

Hint: rotate the diagram