Practice question · Select all that apply
Which changes will induce an EMF in a stationary conducting loop?
Hints
- Anything that changes the FLUX will do; a steady state will not.
- Flux is field times area times the cosine of the angle, changing any factor works.
Show the answer
- A. The loop is being squeezed to a smaller area
- B. The loop is rotating in a steady field
- C. The magnetic field through it is increasing
Why
Flux is , so changing , or all induce an EMF. A completely steady situation changes no flux and induces nothing, however strong the field.
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