# If a current of 7 A passing through a circuit generates 14 W of power, what is the resistance of the circuit?

Feb 15, 2016

The resistance is $R = \frac{2}{7} \Omega$

#### Explanation:

We have the following data:

$I = 7 A$

$P = 14 W$

From this we can calculate the voltage:

$U = \frac{P}{I} = \frac{14}{7} = 2 V$

Now when we have the voltage and the current we can calculate the resistance as:

$R = \frac{U}{I} = \frac{2}{7} \Omega$