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August 4, 2015

Homework Help: Physics

Posted by TJ on Monday, August 3, 2009 at 11:00pm.

A transformer has a secondary voltage of 12 V. The primary voltage is 60V. The number of turns in the secondary is 100. How many turns are in the primary?

I keep getting 200 using the equation Vs/Vp= Ns/Np
the answer is 500... what am i doing wrong

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