Question

question 24 of 25
a 75 ω resistor in a circuit has a current flowing through it of 2.0 a. what is the power dissipated by the resistor? (use $p = vi=i^{2}r=\frac{v^{2}}{r}$)
a. 38 w
b. 150 w
c. 450 w
d. 300 w

Explanation:

Step1: Identify the formula

We use the formula $P = I^{2}R$ since we know current $I$ and resistance $R$.

Step2: Substitute values

Given $I = 2.0\ A$ and $R=75\ \Omega$, so $P=(2.0)^{2}\times75$.

Step3: Calculate the power

$P = 4\times75=300\ W$.

Answer:

D. 300 W