Maximum voltage equation

[Uafl112]

I was doing a kaplan practice physics test and I got one of the questions because I did not know the maximum voltage equation ( V=Vmax*sin(theta)*Time). I never heard of this equation and it did not come up in my Princeton Review reading. U guys know if we need it?

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[Uafl112]

its used to answer questions about voltage at any given time. Never heard of it

 

[sakabato93]

That equation makes no sense... Multiplying Vmax by sin(theta) and time, to me, seems like a meaningless quantity.

 

[Uafl112]

That is what I thought. I got the answer wrong and was confused when the equation was written in the answers as if it was something we were suppose to know. I never saw it in the princeton books. Just making sure its not mandatory that I know it

 

[sakabato93]

Wait, was this a variable source of voltage? I think that Vmaxsin(theta)t is used for AC currents/variable voltage sources.

 

[sakabato93]

http://www.colorado.edu/physics/phys1120/phys1120_sp08/notes/notes/Knight_35_33_AC.pdf

Here it is... I can't believe I didn't realize this before, haha.

 

[Uafl112]

alright, ill commit it to memory