An ideal step-down transformer has a primary to secondary turns ratio of

PHYSICS · Multi-part · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

6{:}1

. The primary is supplied with an rms voltage of

240\,\text{V}

. The secondary is connected to a

3\,\Omega

resistor. (i) Calculate the rms current in the secondary winding. (ii) Determine the rms current in the primary winding.