Part A
Find the maximum power that can be delivered to a resistive load by the circuit shown in the figure.

Part B
For what value of load resistance is the power maximum?

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B. Haranadh KumarLv10

18 Oct 2020

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Related questions

A battery has an emf ε and internal resistance r. A variable load resistor R is connected across the terminals of the battery.

(a) Determine the value of R such that the potential difference across the terminals is a maximum.

(b) Determine the value of R so that the current in the circuit is a maximum.

Choosing the load resistance for maximum power transfer is a case of what is called impedance matching in general. Impedance matching is important in shifting gears on a bicycle, in connecting a loudspeaker to an audio ampliﬁer, in connecting a battery charger to a bank of solar photoelectric cells, and in many other applications.

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Part a)Calculate the no-load voltage vo for the voltage-divider circuit shown in the figure

Part b)Calculate the power dissipated in R₁ and R₂.

Part c)Assume that only 0.7 W resistors are available. The no-load voltage is to be the same as in part A. Specify the smallest ohmic values of R₁ and R₂

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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.