Timeline for Conductivity of plastic, wood and leakage current of laptops
Current License: CC BY-SA 3.0
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 28, 2014 at 13:14 | answer | added | sherrellbc | timeline score: 0 | |
| Jun 28, 2014 at 12:59 | answer | added | RedGrittyBrick | timeline score: 0 | |
| Jun 28, 2014 at 8:43 | comment | added | James Cameron | The open circuit voltage remains 230V. The voltage with a hand present is different. You calculate this voltage by measuring the resistance of your hand, and applying Ohms Law and circuit theory, treating the hand as one low resistance in a network of three resistances. However, a hand does not react linearly to voltage. The effects on the nervous system of a human correlate to voltage once a minimum current is reached. While it is common to say that voltage kills, it is a mild inaccuracy. | |
| Jun 28, 2014 at 8:41 | comment | added | minusatwelfth | That would seem reasonable. But how do you explain the fact that voltage kills, and not current. How would you calculate the voltage applied to your hand in that case? | |
| Jun 28, 2014 at 8:35 | comment | added | PeterJ | I mentioned a pair of resistors. But as @James said I wouldn't try it as an experiment, there can be other issues. I was just illustrating that a high voltage at low current normally can't be felt, let alone be dangerous. | |
| Jun 28, 2014 at 8:31 | comment | added | minusatwelfth | So where do you think my confusion was exactly? | |
| Jun 28, 2014 at 8:27 | comment | added | James Cameron | Math error. Pair of, therefore twenty, not ten. We wouldn't expect to be able to feel 230/20^7 amps. But don't test this without much research and expert review. | |
| Jun 28, 2014 at 8:24 | answer | added | James Cameron | timeline score: 1 | |
| Jun 28, 2014 at 8:20 | comment | added | minusatwelfth | Wouldn't there be a current running through it equal to 230/10^7 amps? | |
| Jun 28, 2014 at 8:07 | review | First posts | |||
| Jun 28, 2014 at 8:11 | |||||
| Jun 28, 2014 at 7:57 | comment | added | PeterJ | It sounds like you're confusing the difference between voltage and current. For example if I stuck a pair of 10 megaohm resistors in a power point and touched the other ends I wouldn't expect to be able to feel it, but they'd still be a 230V AC voltage there. | |
| Jun 28, 2014 at 7:45 | history | asked | minusatwelfth | CC BY-SA 3.0 |