Question

The primary winding of a transformer has 100 turns and its secondary winding has 200 turns. The primary is connected to an a.c supply of 120 V and the current flowing in its is 10 A. The voltage and the current in the secondary are ______.

पर्याय

• 240 V, 5 A

• 240 V, 10 A

• 60 V, 20 A

• 120 V, 20 A

Answer 1

The primary winding of a transformer has 100 turns and its secondary winding has 200 turns. The primary is connected to an a.c supply of 120 V and the current flowing in its is 10 A. The voltage and the current in the secondary are 240 V, 5 A.

Explanation:

`"N"_"s"/"N"_"p" = "V"_"s"/"V"_"p" = 200/100 => "V"_"s"/120`

`"V"_"s" = 240` V

`therefore "V"_"s"/"V"_"p" = "I"_"p"/"I"_"s" = 240/120 = 10/"I"_"s"`

I_s = 5 A