Alternating current tends to travel on the surface of a conductor and avoids travelling through its centre, which is why you are safe inside a car during a thunderstorm or lightning. what is this effect called?
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The correct answer is Skin Effect.
Skin effect is the tendency of an alternating electric current (AC) to be distributed within a conductor such that the current density is largest near the surface of the conductor, and decreases with greater depths in the conductor. This limits the conduction of the current near the surface itself.
The closed car acts like a Faraday cage in which the metal in the car will shield the passengers from any external electric fields and thus prevent the lightning from traveling within the car.
Therefore, it is considered to be safe to stay inside a car during a lightning or thunderstorm.
Skin effect is the tendency of an alternating electric current (AC) to be distributed within a conductor such that the current density is largest near the surface of the conductor, and decreases with greater depths in the conductor. This limits the conduction of the current near the surface itself.
The closed car acts like a Faraday cage in which the metal in the car will shield the passengers from any external electric fields and thus prevent the lightning from traveling within the car.
Therefore, it is considered to be safe to stay inside a car during a lightning or thunderstorm.
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According to the question,alternating current tends to travel on the surface of a conductor and avoids travelling through its centre, which is why you are safe inside a car during a thunderstorm or lightning.
This effect is known as the "Skin effect."
The Faraday cage also works on this skin effect principle.
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