Question

The number of turns in the primary coil of a transformer is 200 and the number turns in the secondary coil is 10 If 240 volt a.c is applied to the primary the output from seconsry will be:

• A. 48 V
• B. 24 V
• C. 12 V
• D. 6 V

Answer 1

The correct option is C 12 V

$N1/V1=N2/V2$

Where N1= no of turns in primary winding $=200$

N2= number of turns in secondary winding$=10$

V1= primary side voltage $=240$

V2 = secondary side voltage.

$V2=V1N2/N1$

$=240\times 10/200$

$=12V$