# Physics help ???

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#1
I have studied peak voltage and rms voltage and this eq Vrms = V0/ (root) 2 where V0 is peak voltage.

could someone detail some pointers pls
Last edited by Orss_; 1 year ago
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1 year ago
#2
I have studied peak voltage and rms voltage and this eq Vrms = V0/ (root) 2 where V0 is peak voltage.

however I don't see how I could be able to relate it to this q- help is appreciated pls
A coil of 10 turns and area 6cm^2 is turning at a rate of 500rpm between the poles of magnet of a magnet of a magnetic field strength 0.45T

(a) what is peak voltage

(a) what is rms voltage

could someone detail some pointers pls
this is a cross topic question, the mention a coil , area and magnetic field does that ring any bells? perhaps emf and electromagnetic induction?
emf= d(N ϕ)/ dt , and N ϕ= BAN cos thetha , since the angle isnt a constant you can perhaps find the max emf by considering when thetha is 0. once you have the peak induced emf you can use your equations
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