A transformer consisting of turns in the primary and turns in the secondary gives an…

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

A transformer consisting of

300

turns in the primary and

150

turns in the secondary gives an output power of

2.2\ \text{kW}

. If the current in the secondary coil is

10\ \text{A}

, then the input voltage and current in the primary coil are: (1)

220\ \text{V}

and

20\ \text{A}

(2)

440\ \text{V}

and

20\ \text{A}

(3)

440\ \text{V}

and

5\ \text{A}

(4)

220\ \text{V}

and

10\ \text{A}