# What is the electric current produced when a voltage of 9 V is applied to a circuit with a resistance of 30 Omega?

Feb 13, 2016

$0.3 \text{A}$

#### Explanation:

Use the equation $I = \frac{V}{R}$ to find:

$I = \frac{9}{30} = \frac{3}{10} = 0.3 \text{A}$

One way to remember the relationship between voltage $V$, current $I$ and resistance $R$ is the $V I R$ triangle:

This can be read as $V = I \cdot R$, $I = \frac{V}{R}$ or $\frac{V}{I} = R$