A 10 m long wire of uniform cross-section and20 2 resistance is used in a potentiometer. Thewire is connected in series with a battery of 5 Valong with an external resistance of 480 2. If anunknown emf ɛ is balanced at 6-0 m length ofthe wire, calculate (i) potential gradient of poten-tiometer wire (ii) the value of unknown emf ɛ.

GivenVoltage =5VTotal Resistance =480+20=500ΩLength of wire=6m 0r 600cm

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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