Published by:
CGP EDU Academic Team
Published on: September 12, 2026
A common transistor radio set requires 12 V (D.C.) for its operation. The D.C. source is constructed by using a transformer and a rectifier circuit, which are operated at 220 V (A.C.) on standard domestic A.C. supply. The number of turns of secondary coil are 24, then the number of turns of primary are ____.
Text Solution
Verified by ExpertsThe correct answer is:
440
(440)
Given
Primary voltage, 
Secondary voltage, 
No. of turns in secondary coil is 
No. of turns in primary coil, 
We know that for a transformer
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