Why is a person safe from lightning inside a car that has a metal body
Favorites|Homepage
Subscriptions | sitemap
HOME > Physics > Why is a person safe from lightning inside a car that has a metal body

Why is a person safe from lightning inside a car that has a metal body

[From: ] [author: ] [Date: 11-05-03] [Hit: ]
but theyre incorrect.The voltage built up in the clouds is so great that it was able to jump through the air (which has a very high resistance to electrical current) all the way down to the ground.A little tire isnt going to stop it from getting through your car because it could simply go from the bottom of your car to the ground (through the air).The real reason why youre say is because metal is a very good conductor, and lightning takes the path of least resistance.Since you and the air inside of your car have such a high resistance compared to the metal outside of your car,......
Hi, i'm doing physics right now and I was wondering why a person is safe from lightning inside a car that has a metal body?

Thank you soo much! :) <3

-
Some people think that it's because cars have rubber tires, but they're incorrect. The voltage built up in the clouds is so great that it was able to jump through the air (which has a very high resistance to electrical current) all the way down to the ground. A little tire isn't going to stop it from getting through your car because it could simply go from the bottom of your car to the ground (through the air).

The real reason why you're say is because metal is a very good conductor, and lightning takes the path of least resistance. Since you and the air inside of your car have such a high resistance compared to the metal outside of your car, the lightning just goes around you and through the metal frame of the car.

-
Because the amount of current that will flow through an object is inversely proportional to its resistance. The metal body of the car has a very low resistance compared to a person on a car seat, so most of the current will flow through the frame and not the person. However, if the person were unlucky enough to be touching two different things connected to the car frame ground I think they would get a pretty decent shock. That's not usually the case, though.

EDIT: Another answer mentions tires, but they are largely irrelevant to the discussion and don't serve as any sort of protection. The bolt of lightning may have just jumped across a mile long air gap to strike an automobile as it finds its way to ground, the tires do nothing to stop it from finding the last few inches to ground. Also while I probably wouldn't volunteer for this experiment, I don't think touching ONE piece of metal is going to fry the car occupant, since the person+clothes+car seat upholstery+... is still a high resistance compared to the car frame.

-
I isnt just because of the rubber tires as an insulators.
The lightening travels along the metal of the car because the higher energy static discharge takes the path of the least resistance and follows the outside metal surface of the car to the ground through the tires.

-
The tires keep in from forming a ground, +. all the plastic inside. But if you are touching metal. Good bye to you. In the car. Same as insulation on a wire protects you from shock. But a bare wire?
1
keywords: inside,person,that,car,safe,is,from,Why,lightning,has,body,metal,Why is a person safe from lightning inside a car that has a metal body
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .