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July 31, 2014

Homework Help: Physics - Transformer in AC

Posted by Bob on Monday, March 14, 2011 at 3:11pm.

A soldering iron uses an electric current in a wire to heat the tip. A transformer with 100 turns on the secondary coil provides 54 W at an rms voltage of 26 V.

a) How many turns are in the primary coil?

b) What is the current in the primary coil?

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