FIGURE 26.12 High voltages are not necessarily dangerous. CYDG R Cgirl FIGURE P26.57

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
icon
Related questions
Question

The girl in Figure 26.12  has her hand on the sphere of a Van de Graaff
generator that is at a potential of 400,000 V. She is standing on an insulating platform, so no current flows through her. But what happens if she touches something that is grounded? Is she still safe? Figure P26.57 shows the equivalent circuit. CVDG = 20 pF represents the capacitance of the Van de Graaff sphere, Cgirl = 100 pF is the capacitance of the girl’s
body, and R = 5 kΩ is the resistance of her body, from one hand to the other. The switch is closed when she touches ground.
a. What is the initial current at the instant the switch is closed?
b. What is the time constant for the current to decay?
c. Occupational safety experts have found that a shock is safe if the product of the voltage, the current, and the time the current is delivered is less than 13.5 V • A • s = 13.5. Estimate this product. Is this shock safe?

FIGURE 26.12 High voltages are not
necessarily dangerous.
Transcribed Image Text:FIGURE 26.12 High voltages are not necessarily dangerous.
CYDG
R
Cgirl
FIGURE P26.57
Transcribed Image Text:CYDG R Cgirl FIGURE P26.57
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 5 steps

Blurred answer
Knowledge Booster
DC circuits
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
College Physics
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
Physics for Scientists and Engineers
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:
9780321820464
Author:
Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:
Addison-Wesley
College Physics: A Strategic Approach (4th Editio…
College Physics: A Strategic Approach (4th Editio…
Physics
ISBN:
9780134609034
Author:
Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:
PEARSON