Book edition 1st Edition

Author(s) Paul Peter Urone

Pages 1272 pages

ISBN 9781938168000

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Short Answer

Calculate the ${emf}_{x}$ of a dry cell for which a potentiometer is balanced when $R_{x} = 1.200 Ω$ , while an alkaline standard cell with an emf $1.600 V$ of requires to $R_{s} = 1.247 Ω$ balance the potentiometer.

The of a dry cell being for which a potentiometer is balanced is $E_{x} = 1.540 V$ .

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Step by Step Solution

TABLE OF CONTENTS :

TABLE OF CONTENTS

Step 1: Concept Introduction

The electric potential generated by an electrochemical cell or a changing magnetic field is known as electromotive force. Electromotive force (EMF) is a well-known abbreviation.

Step 2: Information Provided

Emf of a standard cell: $E_{s} = 1.600 V$
Resistance of the potentiometer: $R_{x} = 1.200 Ω$
Standard resistance value: $R_{s} = 1.247 Ω$

Step 3: Calculation for EMF of the cell

Calculate of a cell using a potentiometer. The formula is -

$E_{x} = E_{s} \frac{R_{x}}{R_{s}} = (1.600 V) \frac{1.200 Ω}{1.247 Ω} = 1.600 V \times 0.96 = 1.540 V$

Therefore, the value for emf is $E_{x} = 1.540 V$ .

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College Physics (Urone)

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Short Answer

Calculate the ${emf}_{x}$ of a dry cell for which a potentiometer is balanced when $R_{x} = 1.200 Ω$ , while an alkaline standard cell with an emf $1.600 V$ of requires to $R_{s} = 1.247 Ω$ balance the potentiometer.

Step by Step Solution

Step 1: Concept Introduction

Step 2: Information Provided

Step 3: Calculation for EMF of the cell

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College Physics (Urone)

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Short Answer

Calculate the emfxof a dry cell for which a potentiometer is balanced when Rx=1.200Ω, while an alkaline standard cell with an emf 1.600Vof requires to Rs=1.247Ωbalance the potentiometer.

Step by Step Solution

Step 1: Concept Introduction

Step 2: Information Provided

Step 3: Calculation for EMF of the cell

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Calculate the ${emf}_{x}$ of a dry cell for which a potentiometer is balanced when $R_{x} = 1.200 Ω$ , while an alkaline standard cell with an emf $1.600 V$ of requires to $R_{s} = 1.247 Ω$ balance the potentiometer.