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I guess you're talking about the third phase. The emf is zero in the second phase, after which it increase sharply to a positive constant value.ok a simple question distrubing me..
when the current is increasing from zero and moving towards the max. of curent aftr which the graph is still with no increase in current aftr it.
wel fr that time emf is increasing bt is increasing in in neagitve axis!!1
why nt in positive axis??
hope u gt what i am tryng to say