# Question

Two batteries with terminal voltages of 10 V and 4 V are connected with their positive terminals together. A 12-Ω resistor is wired between their negative terminals.

(a) The current in the resistor is (1) 0 A, (2) between 0 A and 1.0 A, (3) greater than 1.0 A. Explain your choice.

(b) Use Kirchhoff’s loop theorem to find the current in the circuit and the power delivered to the resistor.

(c) Compare this result with the power output of each battery. Do both batteries lose stored energy? Explain.

(a) The current in the resistor is (1) 0 A, (2) between 0 A and 1.0 A, (3) greater than 1.0 A. Explain your choice.

(b) Use Kirchhoff’s loop theorem to find the current in the circuit and the power delivered to the resistor.

(c) Compare this result with the power output of each battery. Do both batteries lose stored energy? Explain.

## Answer to relevant Questions

Using Kirchhoff’s rules, find the current in each resistor in Fig. 18.35. Two identical resistors (R) are connected in parallel and then wired in series to a 40-Ω resistor. If the total equivalent resistance is 55-Ω, what is the value of R? A series RC circuit with C = 40-μF and R = 6.0Ω has a 24-V source in it. With the capacitor initially uncharged, an open switch in the circuit is closed. (a) What is the volt-age across the resistor immediately ...A galvanometer has a coil resistance of 20-Ω. A current of 200μA deflects the needle through ten divisions at full scale. What resistance is needed to convert the galvanometer to a full-scale 10-V voltmeter? Find the (a) Current in, (b) Voltage across, and (c) Power generated for each resistor shown in the circuit in Fig. 18.40.Post your question

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