Lost power in a circuit is proportional to which of the following?

Lost power in a circuit, often referred to as power loss, is primarily associated with resistance, as described by Joule's law. This law states that the power (P) lost due to resistance in a conductor can be calculated using the formula P = I²R, where I is the current flowing through the resistance (R). This indicates that the power loss is directly proportional to the resistance of the circuit, as well as to the square of the current.

In practical terms, when an electrical current flows through a resistance, it dissipates energy in the form of heat due to the resistance opposing the current. The higher the resistance in the circuit, the greater the amount of power that is lost as heat for a given current. Therefore, recognizing that resistance is the key factor in determining power loss is essential for effectively managing energy efficiency in electrical circuits.

The other options, while related to different aspects of electrical circuits, do not directly explain lost power in the same manner as resistance. Voltage refers to the potential difference and can affect power calculations, but it is not the primary factor in power loss specifics. Conductance, which is the reciprocal of resistance, pertains to how easily current can flow through a circuit. Impedance is a broader term that encompasses