Electricity and the Human Body
Presentation
•
Physics
•
11th - 12th Grade
•
Hard
Rachel Wampler
Used 3+ times
FREE Resource
3 Slides • 2 Questions
1
Electricity and the Human Body
By Rachel Wampler
2
Thermal Hazards
3
Multiple Choice
How much power is dissipated in a short circuit of 240 V AC through a wire with R of 0.250 Ω? What current flows?
124 V
1000 A
124 V
960 A
230 kW
1000 A
230 kW
960 A
4
Shock Hazards
Factors:
Amount of current
Path of current
Duration of shock
Frequency of current
Human body is mainly water and electrolytes, so it's a decent conductor
Muscles are controlled by electrical nerve impulses
A shock can cause a muscle to contract violently
Causes victim to close their fist around wire tightly
Shocks can cause the heart to stop
Human body is most sensitive at 50-60 Hz
5
Multiple Choice
Find the current through a person and identify the likely effect on them if they touch a 120-V AC source: they are standing barefoot on wet grass and has a R of only 4000 kΩ.
26.7 mA
Muscular contraction for duration of the shock
0.400 mA
No effect
26.7 mA
No effect
0.400 mA
Muscular contraction for duration of the shock
Electricity and the Human Body
By Rachel Wampler
Show answer
Auto Play
Slide 1 / 5
SLIDE
Similar Resources on Wayground
4 questions
Electric Charge and Electrostatic Fields Physics
Presentation
•
11th - 12th Grade
6 questions
I2_S25
Presentation
•
12th Grade
3 questions
Física Uno
Presentation
•
11th Grade
3 questions
Potential and Kinetic Energy
Presentation
•
12th Grade
2 questions
Programación Orientada a Objetos
Presentation
•
12th Grade
4 questions
2D Motion Entrance Ticket
Presentation
•
11th - 12th Grade
4 questions
Electrostatics
Presentation
•
11th - 12th Grade
4 questions
Electrostatic Charges
Presentation
•
11th - 12th Grade
Popular Resources on Wayground
24 questions
PBIS-HGMS Day 10
Quiz
•
6th - 8th Grade
10 questions
HCS SCI 03 Summer School Review 3
Quiz
•
3rd Grade
11 questions
Home Scope
Quiz
•
7th - 8th Grade
15 questions
HCS SCI 05 Summer School Assessment 3 Review
Quiz
•
5th Grade
35 questions
Lufkin Road Middle School Student Handbook & Policies Assessment
Quiz
•
7th Grade
18 questions
Geo 11.3 Area of Circles and Sectors
Quiz
•
9th - 11th Grade