Which Method to Use for Calculating Induced EMF: Flux Rule or Lorentz Force?

[Ahmad Kishki]

to calculate emf i can use the flux rule -d(magnetic flux)/dt or the lorentz force line integral across the circuit. Is there a gudeline to follow for knowing when to use either (or both) of these methods?

Thanks :D

 

[zoki85]

This depends on the geometry in the problem and data you know. For instance, in cases where you know area of a closed loop and can easy calculate coresponding flux it is better to use dΨ/dt.

 

[Ahmad Kishki]

This depends on the geometry in the problem and data you know. For instance, in cases where you know area of a closed loop and can easy calculate coresponding flux it is better to use dΨ/dt.

But is there a guideline?

 

[zoki85]

But is there a guideline?

I don't know of any official read regarding this matter.