A resistor of unknown resistance is in series with a 20.00 resistor. A battery of emf 6.0V and negligible internal resistance is connected across the combination. The battery provides a current of 0.80 A. What is the unknown resistance?

A resistor of unknown resistance is in series with a 20.00 resistor. A battery of emf 6.0V and negligible internal resistance is connected across the combination. The battery provides a current of 0.80 A. What is the unknown resistance?

Physics for Scientists and Engineers

10th Edition

ISBN:9781337553278

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter27: Direct-current Circuits

Section: Chapter Questions

Problem 1P: Two 1.50-V batterieswith their positive terminals in the same directionare inserted in series into a...

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Question

A resistor of unknown resistance is in series with a 20.00 resistor. A battery of emf 6.0V and
negligible internal resistance is connected across the combination. The battery provides a current
of 0.80 A. What is the unknown resistance?
O a. 15 Q
O b. 50
O c. 10Q
O d. 12 Q

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