- Electrical power (P) is the rate at which electrical energy is transferred or consumed. - The basic formulas for power are P = VI, where V is voltage and I is current. - Using Ohm's Law (V = IR), we can derive other forms: - Substituting V = IR into P = VI gives P = (IR) I = I²R. (Option A) - Substituting I = V/R into P = VI gives P = V (V/R) = V²/R. (Option D) - Option C, VI, is also a standard formula for power.
Which one of the following formulas does *not* represent electrical power?
Asked in UPSC NDA 1 2021 · Topic: Electric Current (Electrical Power and Energy, Joule heating effect)
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