• :00Days
  • :00Hours
  • :00Mins
  • 00Seconds
A new era for learning is coming soonSign up for free
Log In Start studying!

Select your language

Suggested languages for you:
Answers without the blur. Sign up and see all textbooks for free! Illustration


Fundamentals Of Physics
Found in: Page 766

Answers without the blur.

Just sign up for free and you're in.


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?

The value of the fatal voltage is 100V.

See the step by step solution

Step by Step Solution

Step 1: The given data

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

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.


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=(0.050A)(2000Ω) =100V

Therefore, the fatal voltage is 100V.

Most popular questions for Physics Textbooks


Want to see more solutions like these?

Sign up for free to discover our expert answers
Get Started - It’s free

Recommended explanations on Physics Textbooks

94% of StudySmarter users get better grades.

Sign up for free
94% of StudySmarter users get better grades.