ATAR Notes: Forum
VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Physics => Topic started by: Elnino_Gerrard on November 08, 2010, 09:32:19 pm
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Umm,TSFX 2008 exam question 10. ure given a AC generator 50 turns connected to a light bulb. It asks why does the light bulb flicker. I know its got something with the power being supplied to it not being constant?but what would u write for 2 marks?
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Power supplied to light bulb is given by formula P = VRMSIRMSsin2t since current supplied is AC. Thus power supplied to light bulb thus varies with time, going to 0W at certain points, therefore the light bulb flickers.
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Where did u get the sin^2 t???? :-\
My head is just not working today after that methods exam.
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Where did u get the sin^2 t???? :-\
My head is just not working today after that methods exam.
From reading the textbook =X
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Where did u get the sin^2 t???? :-\
My head is just not working today after that methods exam.
From reading the textbook =X
:O wtf never seen that before so is that for every scenairo or just ac generators?
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Just AC generators, cause like DC has a constant output
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:( huh :( so how would u get the power of a dc generator? just V RMS *I yes? :(
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lol forget about the formula with sin^2 t, 99.999995% chance it is not in the course. For VCE Physics all you ahve to know is P = VI
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Lol :P ohkay haha thanks.