Problem 3
A source with constant emf and internal resistance is connected to a resistive load . Neglect lead resistance; let be current, the terminal and load voltage, and the load power. (a) Find current. (b) Find load voltage. (c) Find load power and power lost inside the source. Keep the sign convention consistent and use appropriate SI units throughout. Each part builds on intermediate results from the preceding part; apply a physical relation only where the stated model assumptions hold. Finally compare the answers with the initial conditions, expected trends, and an independent check when available.
problems.proof.stepOf
problems.proof.analysis
Insert the physical relation into the equation and distinguish known from unknown quantities. The idealizations stated in the setup justify its use.