Question

A 1-w, 350-ω resistor is connected to 24 v. Is this resistor operating within its power rating?

Answer 1

No.

Step-by-step explanation:

`P_r` = Power rating = 1 W

R = Resistance =
`350\ \Omega`

V = Voltage =
`24\ \text{V}`

Power is given by

`P=(V^2)/(R)\\\Rightarrow P=(24^2)/(350)\\\Rightarrow P=1.65\ \text{W}`

`1.65\ \text{W}>1\ \text{W}`

So

`P>P_r`

Hence, the resistor is not operating within its power rating.