Question

Graphs N down hi N down N to S N to N A DO

A) Select the “N down” and “N down hi” runs. Explain why they are different. Why doesn’t this change the area under the curve?

B) Select the “N down” and “N to S” data. Explain the difference.

C) How does the maximum voltage for the coil with more turns compare to the maximum voltage for the coil with fewer turns?

Answer 1

Sol have induced emf E N do JE do Rate of change of flux; Number of at turns. we have enf vs time One can graphs induced Under the ta measure the alrea Curves 02 Ac = s Edt S - N do N (0, -0.) ti ΦΙ I 2 N 100000 hi" is is (a) down" magnetic north pole is going down it means magnetic field is decreasing ň down magnetic north pole going down to high it means magnetic field increasing cohen going from high to down magnetic flux changes this induces voltage in the coil. Similarly going from down also magnetic flux changes. But in Second Case magnetic change also high and induced large induced But Area undee the 02 А. s Edt = -5' wad =-N@-a. is Same for Both the we are when we to high feld increasing voltage. SO to Curve cases ti (با) - 1 In Case À to s' case In In any happens area Will Case N down magnet is moving Coil is moving cage relative motion exists then induced emf develops. when Coil is taken from N to s tight Coupling So be large. Whereas when À-down coupling is low induced emf is less (C) Induced emf ndo [Em LN the number of turns the coupling and rate of change of flux so that induced emf generates when number are there then rate of change of flex will lese and less voltage E- dt more more coupling of fluce more less of turns be will be induced.