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Atomic explanation as to why a piece of constantan wire with a large diameter has a smaller resistance than a piece of constantan wire with a small diameter?
Wiki User
∙ 9y ago
The larger the wire the more atoms there are to transfer the electrons through the wire. Induced electrons from a power source bump other electrons out of the orbit of the wire atoms thus causing electrons to flow and the induced electrons fall into the orbit of the wire atom until the next loose electron knocks that one out of orbit to the next atom and the next one etc.. It's like a one way game of bumper cars until the electrons get to the end of the wire and into the next conducting substance. This is also the difference between an insulator and a conductor that is how freely an atom gives up its electron when its bumped.
Wiki User
∙ 9y ago
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How does the material of wire affect the resistance?
Basic: The larger the diameter the less resistance.Deep:R = p (L / A)The resistance is proportional to the length of the wire divided by its cross-sectional area. p is the resistivity of the material in question and varies greatly. Since area (assuming a circular wire) is A = pi * r2 the larger the diameter of the wire the lower its resistance will be.AnswerResistance is inversely proportional to the square of the diameter. So, if you double the diameter, you will quarter the resistance. If you halve the diameter, you will quadruple the resistance.
Is mercury larger or smaller than earth diameter?
Mercury's diameter is 0.3825 times that of Earth's
Is the diameter of Charon smaller than the rings of Saturn?
Yes, the diameter of Charon, which is the largest moon of Pluto, is significantly smaller than the rings of Saturn. Charon has a diameter of about 1,212 kilometers, whereas the rings of Saturn have an average diameter of about 270,000 kilometers.
What planet has a diameter that is larger than the diameter of Mars but smaller than the diameter of Neptune?
There are two such planets: Venus and Earth.
What controls the diameter of the arterioles and what do changes in diameter affect?
Arterioles are the smallest vessels of the arterial system, with a diameter of about 1/3 millimeter or smaller. There is much smooth muscle in their tunica media, which causes vasocontrictionwhen it contracts, and vasodilation when it relaxes. Such vasoconstriction and vasodilation plays two important roles in the cardiovascular system.controls of distribution of blood flow to different parts of the bodydetermines the total peripheral resistance
Do thicker or thinner wires have more Resistance?
Over the same distance the larger diameter wire will have less resistance that the smaller diameter wire.
Does a wire with a diameter of 0.01 mm have lower resistance than a wire with 0.1 mm?
No, a smaller diameter wire has a higher resistance. The 0.01 mm wire will have 1/100 the cross-sectional area of the 0.1 mm diameter wire, therefore the resistance will be 100 times as high.
The flow of electricity can be compared to the circulation of water in a?
A pipe. The volume of water available can be compared to voltage. The diameter of pipe could be compared to resistance with smaller diameter being larger resistance and the flow of water past a point in pipe is equivalent to current flow.
How does the material of wire affect the resistance?
Basic: The larger the diameter the less resistance.Deep:R = p (L / A)The resistance is proportional to the length of the wire divided by its cross-sectional area. p is the resistivity of the material in question and varies greatly. Since area (assuming a circular wire) is A = pi * r2 the larger the diameter of the wire the lower its resistance will be.AnswerResistance is inversely proportional to the square of the diameter. So, if you double the diameter, you will quarter the resistance. If you halve the diameter, you will quadruple the resistance.
Is mars diameter larger or smaller than earth's diameter?
smaller
Why artery called resistance vessels?
The contraction and relaxation of the smooth muscle in their walls can change their diameter, thus changing the level of pressure (large diameter yields low pressure and smaller diameter yields high pressure).
Is a 25 gauge smaller than a 22 gauge needle?
Yes it is smaller in terms of diameter. Explanation: 25 gauge refers to a needle having an inner diameter of 1/25" (1/25 inches) and 22 gauge refers to a needle having an inner diameter of 1/22" (1/22 inches). Thus the 25 gauge needle has a smaller inner diameter than a 22 gauge needle.
Why shouldn't electrical wire smaller in diameter than the original be used to make a repair?
If you use a smaller diameter wire you would be raising the resistance. The skinnier the wire, the harder it is for the electricity to flow through, causing it to heat up and if it heats up enough it could melt through the insulation and cause a short circuit.
What is a fraction of the sun's diameter?
Any length smaller that the sun's diameter is a fraction of the sun's diameter!
Is Saturn diameter larger or smaller than earths diameter?
yes
Is the diameter of Charon smaller than the diameter of Europa?
The diameter of Charon, one of Pluto's moons, is 1,413 miles. The diameter of Europa, one of Jupiter's moons, is 1,950 miles. Charon is smaller than Europa.
Is mercury larger or smaller than earth diameter?
Mercury's diameter is 0.3825 times that of Earth's
