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

`(N_2)/(N_1)= 2`

Step-by-step 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

`(v_2)/(v_1)c=(N_2)/(N_1)`

`(N_2)/(N_1)=(240)/(120)`

`(N_2)/(N_1)= 2`

Therefore

She can use a turns ratio of 2