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Thread: Moving while lighting, will be induced current in me?

  1. #1 Moving while lighting, will be induced current in me? 
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    Moving while lighting, will be induced current in me? If so, how the circuit will be closed?


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    Makes no real sense can you draw a picture?


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    Quote Originally Posted by Megabrain
    Makes no real sense can you draw a picture?
    Sometimes people say that if you moving while lighting, there will be current induced in you, and you'll die, is it correct, and if so how the electrical circuit is closed? (They say if lighting strikes near you, from the electrical field, if you move, there will be induced current in you)
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  5. #4  
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    What kills you is I understand a current of more than 6mA (0.006Amps) directly across the heart. If lightning is goint to strike you, then it will strike, moving, still, or whatever.
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    Actually my question is:"Will a lightning storm induce, in a person who is moving on the ground, a current? If so, how the electrical circuit will be closed?"
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  7. #6  
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    No because that would imply there is a curent flowing through the field, which there will not be unless the field breaks down, only then can a current flow.
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  8. #7  
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    Quote Originally Posted by Megabrain
    No because that would imply there is a curent flowing through the field, which there will not be unless the field breaks down, only then can a current flow.
    The electrical circuit can't be closed?
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  9. #8  
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    What circuit? can you draw it please?
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  10. #9  
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    What happens, is when you are the highest point and represent the path of least resistance, a positive charge will build up inside you, making your hair stand on end sometimes. Then when enough charge has built up in both you and the cloud, a discharge of electrons from the cloud strikes you, travels through you (again following the path of least resistance) into the ground until the charge is evened out enough for the transfer to stop. It does not really matter if you are moving or not, as long as you stay the path of least resistance. At least, that is how I think it works.:|
    Disclaimer: I do not declare myself to be an expert on ANY subject. If I state something as fact that is obviously wrong, please don't hesitate to correct me. I welcome such corrections in an attempt to be as truthful and accurate as possible.

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  11. #10  
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    Quote Originally Posted by Megabrain
    What circuit? can you draw it please?
    Here is the
    Sorry for being bad painted.
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  12. #11  
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    Quote Originally Posted by KALSTER
    Then when enough charge has built up in both you and the cloud, a discharge of electrons from the cloud strikes you, travels through you (again following the path of least resistance) into the ground until the charge is evened out enough for the transfer to stop.
    Like you I pretend no expertise in this area, but I suspect the first strike is actually a leader from the Earth to the cloud. This creates an ionised pathway aloong which the main strike from cloud to Earth can readily pass. I base this on a vague recollection from a TV documentary, so please do not use this as a bona fide answer to a homework exercise.
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  13. #12  
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    So will be current induced in me, if I move or if I stand?
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  14. #13  
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    Quote Originally Posted by Ophiolite
    Quote Originally Posted by KALSTER
    Then when enough charge has built up in both you and the cloud, a discharge of electrons from the cloud strikes you, travels through you (again following the path of least resistance) into the ground until the charge is evened out enough for the transfer to stop.
    Like you I pretend no expertise in this area, but I suspect the first strike is actually a leader from the Earth to the cloud. This creates an ionised pathway aloong which the main strike from cloud to Earth can readily pass. I base this on a vague recollection from a TV documentary, so please do not use this as a bona fide answer to a homework exercise.
    Now that you mentioned it, it sounds familiar. :wink: . Jolly, You should rather thing of lightning as a large electrostatic discharge, like at home when you shock against a metal door-knob. So no current need be closed, it is merely an evening out of the built up charge by way of the lightning strike (after the pilot discharge of course). Most the electrons from the strike ends up in the earth, with you merely presenting the path of least resistence. I think. :wink:
    Disclaimer: I do not declare myself to be an expert on ANY subject. If I state something as fact that is obviously wrong, please don't hesitate to correct me. I welcome such corrections in an attempt to be as truthful and accurate as possible.

    "Gullibility kills" - Carl Sagan
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    "It is the mark of an educated mind to be able to entertain a thought without accepting it." - Aristotle
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  15. #14  
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    Quote Originally Posted by KALSTER
    Quote Originally Posted by Ophiolite
    Quote Originally Posted by KALSTER
    Then when enough charge has built up in both you and the cloud, a discharge of electrons from the cloud strikes you, travels through you (again following the path of least resistance) into the ground until the charge is evened out enough for the transfer to stop.
    Like you I pretend no expertise in this area, but I suspect the first strike is actually a leader from the Earth to the cloud. This creates an ionised pathway aloong which the main strike from cloud to Earth can readily pass. I base this on a vague recollection from a TV documentary, so please do not use this as a bona fide answer to a homework exercise.
    Now that you mentioned it, it sounds familiar. :wink: . Jolly, You should rather thing of lightning as a large electrostatic discharge, like at home when you shock against a metal door-knob. So no current need be closed, it is merely an evening out of the built up charge by way of the lightning strike (after the pilot discharge of course). Most the electrons from the strike ends up in the earth, with you merely presenting the path of least resistence. I think. :wink:
    I asked if there could be induced current from the magnetic field of the lighting?
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    Quote Originally Posted by scientist91
    I asked if there could be induced current from the magnetic field of the lighting?
    Your drawing shows loops which you call electrical field lines. This makes me think you are getting confused between electrical and magnetic fields. The electrical field lines do not go in closed loops but go between the positive and negative charge. Motion across these field lines does nothing.

    During the actual electrical discharge, there is a high current but it only lasts for a fraction of a second. This does produce circular magnetic field lines like in your sketch, except the lightning bolt would be in the center.

    I don't think it matters if you are moving or not because the magnetic field lines are moving faster than you. If you are close enough to the lightning bolt the changing magnetic field would induce a voltage between your head and your feet. The circuit would be completed if there were an arc from your body to the ground, but in this case it would probably be indistinguishable from being struck by the lightning.
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    Quote Originally Posted by Harold14370
    Quote Originally Posted by scientist91
    I asked if there could be induced current from the magnetic field of the lighting?
    Your drawing shows loops which you call electrical field lines. This makes me think you are getting confused between electrical and magnetic fields. The electrical field lines do not go in closed loops but go between the positive and negative charge. Motion across these field lines does nothing.

    During the actual electrical discharge, there is a high current but it only lasts for a fraction of a second. This does produce circular magnetic field lines like in your sketch, except the lightning bolt would be in the center.

    I don't think it matters if you are moving or not because the magnetic field lines are moving faster than you. If you are close enough to the lightning bolt the changing magnetic field would induce a voltage between your head and your feet. The circuit would be completed if there were an arc from your body to the ground, but in this case it would probably be indistinguishable from being struck by the lightning.
    Can you please draw me a picture, how the loop will be closed?
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  18. #17  
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    why?
    Solomon Grundy
    In 1944, this creature rose from the swamp, with tremendous strength and some dormant memories that for example allowed him to speak English, but not knowing what he was, and not remembering Cyrus Gold or his fate. Wandering throughout the swamp, he encountered two escaped criminals, killed them, and took their clothes. When they asked him his name, he simply muttered that he had been born on Monday. Reminded of an old nursery rhyme about a man born on Monday, the thugs named the creature "Solomon Grundy".
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  19. #18  
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    Harold I can't understand the last part of the last sentence: "but in this case it would probably be indistinguishable from being struck by the lightning."
    Can you rephrase it, please?
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  20. #19  
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    Quote Originally Posted by scientist91
    Harold I can't understand the last part of the last sentence: "but in this case it would probably be indistinguishable from being struck by the lightning."
    Can you rephrase it, please?
    I think the lightning would have to hit pretty close to generate that much induced voltage. If lightning hit right next to somebody and they did not get hit directly by the strike, but got electrocuted by induced current, you would probably just assume they got struck by lightning.
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