Question

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

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

Answer 1

Answer: (C)

12 V

Answer 2

$\frac{V_{s}}{V_{p}} = \frac{N_{s}}{N_{p}} \Rightarrow V_{s} = \frac{N_{s}}{N_{p}} \times V_{p} = \frac{10}{200} \times 240 = 12\mspace{6mu} volts$