Question

A 0.5 W, 2000 Ω resistor has a current flow of 0.01 A through it. Is this resistor operating within its power rating?

Answer 1

Answer:

  yes

Explanation:

The power being dissipated by the resistor is ...

  P = I^2·R = (0.01)^2(2000) = 0.2 . . . watts

This value is less than 0.5 W, so the device is being operated within its rating.