Physics

Problem

A transformer with

600

primary turns is connected to a

240\,\text{V}

rms mains supply. The secondary has

60

turns and is connected to a

3\,\Omega

resistive load. If the transformer operates at

90\%

efficiency, calculate the rms current in the primary winding. a)

0.80\,\text{A}

8.0\,\text{A}

0.89\,\text{A}

0.72\,\text{A}