In this problemassume

1 the batterieshave zero internal resistance, 2the currentsare flowing in the direction indicated by thearrows. Anegative current denotes flowopposite to the direction of thearrow.

a) Find the current through the 12.5 resistor andthe3.1 V batteryat the top of the circuit. Answer in unitsofA.

b) Find the current through the 21.6 resistor inthe center of thecircuit. Answer in units of A.

c)Find the current through the 12.3 V battery atthe bottom ofthe circuit. Answer in units of A

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Trinidad TremblayLv2

2 Aug 2019

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Related questions

The circuit in the diagram consists of a battery with EMF , a resistor with resistance R and an ammeter and voltmeter. The voltmeter and ammeter can be considered as ideal that is their resistances are infinity and zero respectively. The current in the resistor is I and the voltage is V. The internal resistance of battery is not zero.

A) What is the ammeter Reading I? Express your answer in terms of E, R, and rint.

B) What is the voltmeter reading V? Express your answer in terms of E, R, and rint.

C) What is the power PR dissipated in the resistor? Express your answer in terms of I and V.

D) Again, what is the power PR dissipated in the resistor? This time, express your answer in terms of one or more of the following variables: I, rint, and R.

E) What is the total power Ptotal dissipated in the resistive elements of the circuit, in terms of the EMF E of the battery and the current in the circuit? Express your answer in terms of E and the ammeter current I.

coralfrog788

To understand how to compute power dissipation in a resistive circuit.

(Figure 1) The circuit in the diagram consists of a battery with EMF E, a resistor with resistance R, an ammeter, and a voltmeter. The voltmeter and the ammeter (labeled V and A) can be considered ideal; that is, their resistances are infinity and zero, respectively. The current in the resistor is I, and the voltage across it is V. The internal resistance of the battery r_int is not zero.

Part A. What is the ammeter reading I? Express your answer in terms of ε, R, and r_int.

Part B. What is the voltmeter reading V? Express your answer in terms of ε, R, and r_int.

In the following parts, you will express the power dissipated in the resistor of resistance R using three different sets of variables.

Part C. What is the power P_R dissipated in the resistor? Express your answer in terms of I and V.

Part D. Again, what is the power P_R dissipated in the resistor? This time, express your answer in terms of one or more of the following variables: I, r_int, and R.

Part E. For the third time, what is the power P_R dissipated in the resistor? Express your answer in terms of one or more of the following variables: ε, r_int, and R.

Part F. What is the total power P_total dissipated in the resistive elements of the circuit? Express your answer in terms of one or more of the following variables: ε, r_int, and R.

Part G. What is the total power P_total dissipated in the resistive elements of the circuit, in terms of the EMF ε of the battery and the current in the circuit? Express your answer in terms of ε and the ammeter current I.