In a transformer

PHYSICS · Single correct · CBSE · Physics · Alternating Current · Alternating Current

Problem

In a transformer, the output current and voltage are respectively

4\text{ A}

and

20\text{ V}

. If the ratio of primary to secondary turns is

2:1

, what are the input current and voltage? (a)

2\text{ A}

and

40\text{ V}

(b)

8\text{ A}

and

10\text{ V}

(c)

4\text{ A}

and

10\text{ V}

(d)

8\text{ A}

and

40\text{ V}