Question

A transformer has 1500 turns in the primary coil and 1125 turns in the secondary coil. If the voltage in the primary coil is 200 V, then the voltage in the secondary coil is

• A. 100 V
• B. 150 V
• C. 200 V
• D. 250 V

Answer 1

The correct option is B

150 V

Consider the Voltage in Primary coil be V1 and Voltage in Secondary coil be V2

Also, Number of turns in Primary coil be N1 and Number of turns in Secondary coil be N2.

So, the relation between these terms is :-

$\frac{V1}{N1}=\frac{V2}{N2}$

$\Rightarrow \frac{200}{1500}=\frac{V2}{1125}$

$\Rightarrow N2=\frac{1125\times 200}{1500}=150\text{volts}$