Question

1. what is the power of a small electric motor if a current of 2 a flows when connected to a 24 v power supply? 0.083 w 12 w 48 w 6. what power is transmitted by a current of 2 a flowing through a 6 ω resistor? 12 w 24 w 72 w

Explanation:

Step1: Recall power - voltage - current formula

The formula for power $P$ in an electrical - circuit is $P = VI$, where $V$ is voltage and $I$ is current.
For question 5:
Given $V = 24\ V$ and $I = 2\ A$.
$P=VI$
$P = 24\times2$
$P = 48\ W$

Step2: Recall power - current - resistance formula

The formula for power $P$ in terms of current $I$ and resistance $R$ is $P=I^{2}R$.
For question 6:
Given $I = 2\ A$ and $R = 6\ \Omega$.
$P=I^{2}R$
$P=(2)^{2}\times6$
$P = 4\times6$
$P = 24\ W$

Answer:

1. 48 W
2. 24 W