a 210 ohm resistor uses 9.28 w of power. how much current flows through the resistor? (unit = a)

Explanation:

Step1: Recall power - resistance - current formula

The power formula is $P = I^{2}R$, where $P$ is power, $I$ is current, and $R$ is resistance. We need to solve for $I$.

Step2: Rearrange the formula for $I$

From $P = I^{2}R$, we can get $I=\sqrt{\frac{P}{R}}$.

Step3: Substitute given values

Given $P = 9.28\ W$ and $R = 210\ \Omega$, then $I=\sqrt{\frac{9.28}{210}}$. $I=\sqrt{0.04419}\approx 0.21\ A$

Answer:

$0.21$