Which one of the following formulas does not represent electrical power?

Electrical power (P) is defined as the rate at which electrical energy is dissipated or consumed in a circuit. The fundamental formula for electric power is the product of potential difference (V) and current (I), expressed as P = VI. By applying Ohm's law (V = IR), this expression can be derived into two other equivalent forms: P = I²R and P = V²/R [1]. These three formulas (VI, I²R, and V²/R) are standard representations used to calculate power depending on whether voltage, current, or resistance is known [1]. The expression IR² is mathematically incorrect and does not represent electrical power, as power is proportional to the square of the current (I²) multiplied by the resistance (R), not the current multiplied by the square of the resistance [1].

Sources

1. [1] Science , class X (NCERT 2025 ed.) > Chapter 11: Electricity > What you have learnt > p. 192