Question

Tommy runs his juicer every morning. The juicer uses 90 W of power and the current supplied is 4.5 A. How many volts are necessary to run the juicer? Ans: 20 V

Answer 1

$P=VI$

Where $P=$ Power

$V=$ Voltage

$I=$ Current

$90=4.5V$

$V=\frac{90}{4.5}$

$=20V$