The electromotive force of a standard cell is measured with a potentiometer gives a reading of 1.3562 V. When a 1.0 mega ohm resister is connected across the standard cell terminals, the reading drops to 1.3560 V. What is the internal resistance of the standard cell? potentiometer O 174.5 ohms O 145.7 ohms O 147.5 ohms O 157.4 ohms

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Russell E. Smith
Chapter13: Heating Control Devices
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The electromotive force of a standard cell is measured with a potentiometer gives a reading of
1.3562 V. When a 1.0 mega ohm resister is connected across the standard cell terminals, the
potentiometer reading drops to 1.3560 V. What is the internal resistance of the standard cell?
O 174.5 ohms
O 145.7 ohms
O 147.5 ohms
157.4 ohms
Transcribed Image Text:The electromotive force of a standard cell is measured with a potentiometer gives a reading of 1.3562 V. When a 1.0 mega ohm resister is connected across the standard cell terminals, the potentiometer reading drops to 1.3560 V. What is the internal resistance of the standard cell? O 174.5 ohms O 145.7 ohms O 147.5 ohms 157.4 ohms
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