1.

Figur below shows a graph of emf ‘e’ generated by an ac generator versus time ‘t’.What is’the frequency of the emf ?

Answer»

If study the (e. t) curve it is quite evident that to produce one cycle of a.c., the time taken is 0.10 s

∴ T = 0.1 s 

∴ Frequency v = 1/T = 1/0.1 = 10 Hz



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