# Physics

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?

1. 👍 0
2. 👎 0
3. 👁 273

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