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u don't need rms for the hsc dwthis is mad confusing
Yeah ok, thanks!u don't need rms for the hsc dw
it's not an explicit syllabus point so u just need to know how the current goes back 'n' forth and how that ties in with motors and generators (like why slip rings in an ac gen create ac current)
There is nothing wrong with the Physics in Robert Farr's book, but I think he wrote that section in 2017 before he had studied the new syllabus properly. You don't need to calculate the root mean square value of a sinusoidal voltage for HSC Physics (if you are doing 4-unit Maths then you should have no difficulty with the maths). You must understand the difference in the theory and construction of AC and DC generators. You must understand the theory of AC induction motors, which in my experience students find this the most difficult theory.this is mad confusing