Question 437Electricity/Electronics - Assistant Engineer70% to pass
How is the power dissipated as heat in a direct current circuit calculated?
AI Explanation
The correct answer is D) I squared times R.
This formula, I^2 * R, is the standard equation for calculating the power dissipated as heat in a direct current (DC) circuit. It is derived from Ohm's law and represents the relationship between current (I), resistance (R), and power (P).
The other options are incorrect because: A) P/R does not account for the current in the circuit; B) E/I does not directly relate to power dissipation; and C) I*R/T is not the correct formula for calculating power dissipation in a DC circuit.
Related Questions
#435 An electrical component is connected across a 120 volt 60 hertz AC supply. What is the current drawn by the component if the impedance is 200 ohms? #436 What is the total resistance of the electrical circuit illustrated in figure "B" if the resistance of R1 is 2 ohms, R2 is 4 ohms, and R3 is 4 ohms and the battery voltage is 6 volts? Illustration EL-0019 #438 In a 60 Hz AC system, what is the duration in seconds for one complete cycle? #439 An AC generator produces 60 Hz at 1800 RPM. If the generator speed is increased to 1830 RPM, what will happen to the frequency in Hz? #440 What is the total resistance of figure "B" of the illustrated circuit if the resistance of R1 is 3 ohms, R2 is 4 ohms, and R3 is 5 ohms? Illustration EL-0020