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Suppose you measure the terminal voltage of a 2.95-V lithium cell having an internal resistance of...
Suppose you measure the terminal voltage of a 1.585V alkaline
cell having an internal resistance of 0.100 Ω by placing a 1.00kΩ
voltmeter across its terminals. (See figure.)
What current flows?
A. 1.59 mA
B. 159 mA
C. 1.58 mA
D. 15.9 A
Find the terminal voltage.
A. 1.5850 V (need four digits to see the difference)
B. 1.5852 V
C. 1.5848 V
D. 1.6850 V
To see how close the measured terminal voltage is to the
emf, calculate their...
Calculate the terminal voltage for a battery with an internal resistance of 0.750 Ohm and an emf of 6.50 V when the battery is connected in series with a 78.0-Ohm resistor. Express your answer to three significant figures and include the appropriate units. V_ab = Calculate the terminal voltage for a battery with an internal resistance of 0.750 Ohm and an emf of 6.50 V when the battery is connected in series with an 780-Ohm resistor. Express your answer to...
With a 1500 MΩ resistor across its terminals, the terminal voltage of a certain battery is 2.60 V . With only a 5.11 Ω resistor across its terminals, the terminal voltage is 1.80 V Part A Find the internal emf of this battery. Express your answer in volts to three significant figures. Part B Find the internal resistance of this battery. Express your answer in ohms to three significant figures. Part C What would be the terminal voltage if the...
When a battery voltage is measured by placing a high-resistance voltmeter across the terminals of the battery, the voltmeter reads 6.3V. With the voltmeter leads still attached, the battery terminals are then connected to a resistor in series with an ammeter. In this arrangement, the ammeter reads 150 mA, and the voltmeter reads 5.9V. What are the emf and the internal resistance of the battery?
Calculate the terminal voltage for a battery with an internal resistance of 0.750 Ω and an emf of 7.00 V when the battery is connected in series with a 71.0-Ω resistor. Express your answer to three significant figures and include the appropriate units.
A battery with EMF 90.0 V has internal resistance Rb = 9.93 A. What is the reading Vv of a voltmeter having total resistance Rv = 490 Ω when it is placed across the terminals of the battery? Express your answer with three significant figures. B. What is the maximum value that the ratio Rb/Rv may have if the percent error in the reading of the EMF of a battery is not to exceed 5.00 %? Express your answer with...
A battery with EMF 90.0 V has internal resistance R_b = 9.10 Ohm. What is the reading V_v of a voltmeter having total resistance R_v = 470 Ohm when it is placed across the terminals of the battery? Express your answer with three significant figures. What is the maximum value that the ratio R_b/R_v may have if the percent error in the reading of the EMF of a battery is not to exceed 3.50%? Express your answer with three significant...
A cell with emf 15V and internal resistance 5.60 is connected in series to an ammeter and a 0-3.9M2 variable resistor. A voltmeter is connected across the terminals of the cell a) Sketch the circuit diagram b) Describe how this circuit can be used to obtain a value for the emf of the cell c) Sketch and label thegraph d) Calculate the terminal voltage when a current of 87.9mA is measured by the ammeter e) Calculate the load resistance when...
A battery with EMF 90.0 V has internal resistance Rb = 8.95 Ω . Part A What is the reading Vv of a voltmeter having total resistance Rv = 440 Ω when it is placed across the terminals of the battery? Vv = 88.2 V Part B What is the maximum value that the ratio Rb/Rv may have if the percent error in the reading of the EMF of a battery is not to exceed 5.00 % ? Express your...
Calculate the terminal voltage of a 8.3100 V lithium cell in a digital wristwatch that draws 0.2800 mA and the cells internal resistance is 5.7500 1. Answer should be in the correct number of sig. figs. . V