Question

A transformer has 500 turns in primary and 100 turns in secondary. If input voltage is 220 V AC, the output voltage is:

• A. 44 V
• B. 1100 V
• C. 220 V
• D. 440 V

Hint:

Step-down transformer reduces voltage.

Answer 1

The Correct Option is A

\[ \frac{V_s}{V_p}=\frac{N_s}{N_p}=\frac{100}{500}=\frac{1}{5} \] \[ V_s=\frac{220}{5}=44\ \text{V} \]