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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 ______.
Options
240 V, 5 A
240 V, 10 A
60 V, 20 A
120 V, 20 A
MCQ
Fill in the Blanks
Solution
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"`
Is = 5 A
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