Which of the following is correct regarding electric power?
2021
Which of the following is correct regarding electric power?
- A.
P = I²V
- B.
P = I / V
- C.
P = VI
- D.
P = V / I
Attempted by 261 students.
Show answer & explanation
Correct answer: C
Electric power (P) is the rate at which electrical energy is transferred in a circuit. The standard formula for power is P = V × I, where V is voltage and I is current. This formula is derived from the definition of power as the product of voltage and current. Other forms, such as P = I²V or P = V/I, do not represent the correct relationship and are not used in standard electrical calculations. Therefore, the correct expression for electric power is P = VI.