Book edition 10th Edition

Author(s) David Halliday

Pages 1328 pages

ISBN 9781118230718

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Short Answer

A human being can be electrocuted if a current as small as 50mA passes near the heart. An electrician working with sweaty hands makes good contact with the two conductors he is holding, one in each hand. If his resistance is $2000 Ω$ , what might the fatal voltage be?

The value of the fatal voltage is 100V.

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Step by Step Solution

TABLE OF CONTENTS :

TABLE OF CONTENTS

Step 1: The given data

Current passing near the heart is, l = 50mA or 0.050 A
Resistance, $R = 2000 Ω$

Step 2: Understanding the concept of the Ohm’s Law

Ohm’s law states that the potential difference is directly proportional to the current and the constant of proportionality is called resistance.

We can find the fatal voltage by substituting the given values of the current and the resistance in the formula for Ohm’s law.

Formula:

The voltage equation from Ohm’s law, V = lR …(i)

Here, V is the potential difference, l is current, R and is resistance.

Step 3: Calculation of the fatal voltage

Using the given data in equation (i), we can get the value of the fatal voltage as follows:

$V = (0.050 A) (2000 Ω) = 100 V$

Therefore, the fatal voltage is 100V.

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Fundamentals Of Physics

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Short Answer

A human being can be electrocuted if a current as small as 50mA passes near the heart. An electrician working with sweaty hands makes good contact with the two conductors he is holding, one in each hand. If his resistance is $2000 Ω$ , what might the fatal voltage be?

Step by Step Solution

Step 1: The given data

Step 2: Understanding the concept of the Ohm’s Law

Step 3: Calculation of the fatal voltage

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Short Answer

A human being can be electrocuted if a current as small as 50mA passes near the heart. An electrician working with sweaty hands makes good contact with the two conductors he is holding, one in each hand. If his resistance is 2000Ω, what might the fatal voltage be?

Step by Step Solution

Step 1: The given data

Step 2: Understanding the concept of the Ohm’s Law

Step 3: Calculation of the fatal voltage

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A human being can be electrocuted if a current as small as 50mA passes near the heart. An electrician working with sweaty hands makes good contact with the two conductors he is holding, one in each hand. If his resistance is $2000 Ω$ , what might the fatal voltage be?