A 10 m long wire of uniform cross-section and 20 2 resistance is used in a potentiometer. The wire is connected in series with a battery of 5 V along with an external resistance of 480 S2. If an unknown emf ɛ is balanced at 6-0 m length of the wire, calculate (i) potential gradient of poten- tiometer wire (ii) the value of unknown emf ɛ.
A 10 m long wire of uniform cross-section and 20 2 resistance is used in a potentiometer. The wire is connected in series with a battery of 5 V along with an external resistance of 480 S2. If an unknown emf ɛ is balanced at 6-0 m length of the wire, calculate (i) potential gradient of poten- tiometer wire (ii) the value of unknown emf ɛ.
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 19P
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