NDA2022General AbilityGeneral ScienceActual
Which one of the following terms cannot represent electrical power in a circuit?
Options
- AVI
- BI ^2 / R
- CI^2 R
- DV ^2 / R
Correct answer
B. I ^2 / R
Step-by-step solution
The electric power is given by P = VI , where V is the potential difference, I is the electric current and P is the electric power. Since, V = IR Therefore P=I R I=I^2 R Or, I^2 R=(V / R)^2 R=V^2 / R