The left hand rule and the right hand spiral rule What rules are used under what circumstances? What do the four fingers, thumb and palm of each rule represent? What changes do the left and right hands follow? Under what conditions can the rules be formed?

The left hand rule and the right hand spiral rule What rules are used under what circumstances? What do the four fingers, thumb and palm of each rule represent? What changes do the left and right hands follow? Under what conditions can the rules be formed?

The right hand is used to judge the direction of the magnetic induction wire around the solenoid, and the thumb is the N pole; the right hand is used to judge the direction of the ampere force in the magnetic induction, and the four fingers are the direction of the current, and the magnetic induction wire should pass through the palm of the hand, and the thumb is the direction of the ampere force

Please give an example to illustrate the analysis and calculation that can be applied to electromagnetic field

It can be used for electromagnetic induction function

Does the field vector in static electromagnetic field have equal phase plane?
When learning plane electromagnetic wave, the concept of plane electromagnetic wave means that the equal phase plane of electromagnetic wave field vector is an infinite plane perpendicular to the propagation direction of electromagnetic wave. What is the phase concept of the equal phase plane? In the time harmonic electric field, the equal phase plane is wt KZ = const?

For plane wave, such as electric field X direction, magnetic field Y direction, the propagation direction is Z direction, the equal phase plane is XY plane, because on this plane, the electromagnetic field size and direction are the same
When the electromagnetic field is a positive maximum, the phase is 0. After 90 degrees (that is, WT KZ = pi / 2), the electromagnetic field becomes 0, and then it becomes a negative maximum after 90 degrees
For the electrostatic field or magnetic field, its size and direction are constant, there is no fluctuation, there is no phase