An engineer is designing a high-efficiency heating element for an electric vehicle cabin heater. To optimize the rate of electrical energy transfer (electrical power, PPP), they must use correct mathematical relationships.
Which row of the table shows two correct equations that can be used to calculate the electrical power P P\,P dissipated by a heating element of resistance RRR?
| Equation 1 | Equation 2 | |
|---|---|---|
| A | P=V2RP = V^2 RP=V2R | P=I2R\displaystyle P = \frac{I^2}{R}P=RI2 |
| B | P=V2R\displaystyle P = \frac{V^2}{R}P=RV2 | P=I2RP = I^2 RP=I2R |
| C | P=RV2\displaystyle P = \frac{R}{V^2}P=V2R | P=I2RP = I^2 RP=I2R |
| D | P=V2R\displaystyle P = \frac{V^2}{R}P=RV2 | P=IR2P = I R^2P=IR2 |
Row A
Row B
Row C
Row D