Generally a larger diameter copper wire would create the least resistance to electron flow. Copper is the most conductive and is widely used.
No.
Usually you would want to stay at least 10 feet away from power lines. Any conductive material you are working with also has to be at least 10 feet away (metal extension ladder).
A highly conductive metal is one where the availability of electron flow is high. Examples are copper, silver, aluminum, etc.
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Glass
No, brass is not the least conductive metal. It is a fairly good conductor of electricity, though not as conductive as metals like copper or silver.
how about water, or Mercury as used in thermometers. both conductive.
No, copper is a better electrical conductor than mercury. Copper has a higher electrical conductivity due to its atomic structure and free electrons that allow for the easy flow of electricity. Mercury, being a liquid metal, has lower conductivity compared to solid metals like copper.
Mercury is the least massive planet in our solar system.
Lack of any media like vacuum
Mercury has no Atmosphere and is very hot facing the Sun and very Cold facing away from the Sun. Not conducive to life as we know it.
Mercury is the smallest and the least massive planet, out of the eight in our solar system.
If you put an LED in liquid mercury, the LED will still emit light as normal because the mercury is not electrically conductive. However, it is extremely dangerous to handle liquid mercury due to its toxicity, so this experiment should not be attempted.
Mercury is the planet in our solar system with the least mass, with a mass of about 0.055 times that of Earth.
(most dense to least dense) gold, mercury, water, oxygen
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