Question

A 1.5 volt battery is connected to a 10 ohm resistor.

a. What current passes through the resistor?

b. What is the power developed by this resistor?

Answer 1

$a. Current I =\frac {Voltage V} {Resistance R}$

$I= \frac{1.5} {10} = 0.15A$

b. $Power P = VI$

$P= 1.5\times 0.15= 0.225 W$