Question

While cooking dinner, Dinah's oven uses a 122 V line and draws 6 A of current whenheated to its maximum temperature. What is the resistance of the oven when it'sfully heated?

Answer 1

Given,

The supply voltage, V=122 V

The current drawn by the oven, I=6 A

From Ohm's law, the voltage across a load is proportional to the current through the load.

Thus the supply voltage of the oven is given by,

$V=IR$

Where R is the resistance of the oven.

On rearranging the above equation,

$R=\frac{V}{I}$

On substituting the known values,

$\begin{gathered} R=\frac{122}{6} \\ =20.33\text{ }\Omega \end{gathered}$

Thus the resistance of the oven when it is fully heated is 20.33 Ω