Question

Turn ratio in a step-up transformer is 2 : 1. If a cell of 1.5V is connected across the input, then the voltage across the output will be:

• A. 0.1 V
• B. 1.5 V
• C. 0.75 V
• D. Zero

Answer 1

The correct option is C 0.75 V

In a transformer
$\frac{n_p}{n_s}=\frac{V_p}{V_s}{V}_s=0.75V$