4) A battery with unknown emf (ɛ) and internal resistance (r) is connected to a circuit that involves an ideal voltmeter, a switch, and two resistors R1 =1 Q, R2 =10 Q, as shown below. When the switch is connected to a, the voltmeter reads 7 V. When the switch is connected to b, the voltmeter reads 10 V. Calculate the value of the internal resistance r. a R, R2 0.50 0 0.25 0 0.12 0 1.00 Q 0.75 0 Diğer:

4) A battery with unknown emf (ɛ) and internal resistance (r) is connected to a circuit that involves an ideal voltmeter, a switch, and two resistors R1 =1 Q, R2 =10 Q, as shown below. When the switch is connected to a, the voltmeter reads 7 V. When the switch is connected to b, the voltmeter reads 10 V. Calculate the value of the internal resistance r. a R, R2 0.50 0 0.25 0 0.12 0 1.00 Q 0.75 0 Diğer:

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter21: Current And Direct Current Circuits

Section: Chapter Questions

Problem 33P: A battery has an emf of 15.0 V. The terminal voltage of the battery is 11.6 V when it is delivering...

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Question

4) A battery with unknown emf (ɛ) and internal resistance (r) is connected
to a circuit that involves an ideal voltmeter, a switch, and two resistors R1 =1
Q, R2 =10 Q, as shown below. When the switch is connected to a, the
voltmeter reads 7 V. When the switch is connected to b, the voltmeter
reads 10 V. Calculate the value of the internal resistance r.
RI
Rz
0.50 0
0.25 0
0.12 Q
1.00 0
0.75 Q
Diğer:
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