Multiple choice

Which of the following formulas is used for power in terms of I and R?

  1. P = IR

  2. P = I2/R

  3. P = I2R

  4. P = I/R

  5. P = R/I2

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

We have, P = v x I Now from ohm’s law, we have V/I = R Or v = I X R , now from 1 P = I2R where  I = current and R = resistance