Magnetism and Induction Equation Summary

Magnetism Rules

Right Hand Rules

not all RHR use current in traditional direction (from positive to negative)

RHR for magnetic field around a straight conductor
  • thumb, I
  • fingers, B
RHR for magnetic field direction from current flowing in a coil
  • fingers, I
  • thumb, North
RHR fro the force on a conductor (or moving charge) in a magnetic field
  • thumb, F
  • index finger, I (or qv)
  • rest of fingers (perpendicular to index finger), B

 

Equation Summary
Force on a conductor in a magnetic field
Force on a moving charge in a magneticfield
Magnetic field strength about a straight conductor
Force between two parallel straight conductors
Magnetic field strength within solenoids
Definition of magnetic flux
Flux Linkage
Magnitude of EMF generated in a coil due to a changing magnetic flux
Magnitude of EMF generated in a wire moving in a B field

must

derive
RMS electrical potential and current

Transformer

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