> Can you tell me, how is it possible
> to measure induced emf in a circular loop?
With a circular wire and a voltmeter or oscilloscope.
This is my first time on the list.
If you want a more-detailed answer, try again with
a more-detailed question:
-- What do you want to measure and why?
-- Do you have a particular field already that you
want to measure?
-- Or are you just trying to set up a demo, so you
get to choose the source of the field?
Do you want a transformer with primary and
secondary?
Do you want a magneto with stator and rotor?
-- What have you tried already?
-- Do you have a sensitivity problem?
(If so, wind yourself a multi-turn loop.)
-- Do you have an interference problem?
(If so, we can discuss shielding and/or
differential measurements.)
-- Is the loop unduly perturbing the field you're
trying to measure?