Question

A friend returns to the United states from Europe with a 960 W coffee maker, designed to operate from a 240 V line. What can she do to operate it at the USA-standard 120 V

Answer 1

Answer:

$\frac{N_2}{N_1}= 2$

Explanation:

From the question we are told that:

Power $W=960W$

Voltage $V=240v$

USA-standard $V_{usa}=120 V$

Applying A step down transformer

Generally the equation for a Transformer is mathematically given by

 $\frac{v_2}{v_1}c=\frac{N_2}{N_1}$

 $\frac{N_2}{N_1}=\frac{240}{120}$

 $\frac{N_2}{N_1}= 2$

Therefore

She can use a turns ratio of 2