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Because resistance is inversely proportional to the cross sectional area of the wire and directly proportional to its length. R = p*L/A, where R is resistance (in Ohms), p is resistivity (property of the material, in Ohms*m), L and A are length and area of the wire.
And if you think about it, it makes perfect sense. In thick wire electrons have a lot of 'room' to move, they do not obstruct the path. If you imagine it is like a road with many free lanes - cars move fast and freely i.e. low resistance (or more scientifically, like many wires in parallel). Where as length is proportional to the resistance, since every small segment of wire adds more resistance to the total (many wires in series).
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What happens to resistance of the wire if the wire is short?
Short wire has less resistance Long wire has more resistance Thick wire has less resistance Thin wire has more resistance
Does a thin wire has more RESISTIVITy or a thin wire of the same material?
Resistivity is a property of the material only, not of the dimensions of the wire. The resistance of a wire is the resistivity times the length divided by the cross-section area. So a long wire has more resistance, a thicker wire has less resistance, even if they are both made of copper with the same resistivity.
Does thin wires have high or low resistance?
Other things being equal, a thin wire will have a higher resistance than a thick wire.
Why is the filament used in bulbs thin and long?
because the filament should be heated so the resistance should be high .so it uses a long and thin wire
Is the wire gets thicker or thin when the resistance is less?
Resistance of a wire is inversely proportional to the square of its radius.
What happens to resistance of the wire if the wire is short?
Short wire has less resistance Long wire has more resistance Thick wire has less resistance Thin wire has more resistance
Which offers more resistance to the flow of charge a thick wire or a thin wire?
Thin wire.
Does a thin wire has more RESISTIVITy or a thin wire of the same material?
Resistivity is a property of the material only, not of the dimensions of the wire. The resistance of a wire is the resistivity times the length divided by the cross-section area. So a long wire has more resistance, a thicker wire has less resistance, even if they are both made of copper with the same resistivity.
Does thin wires have high or low resistance?
Other things being equal, a thin wire will have a higher resistance than a thick wire.
Is electric resistance greater in a short wire or a long thin wire?
Resistance is the restriction of electrical flow in a component/wire/etc. If you think of a short fat wire as a short freeway and a long thin wire as a quiet country road then the answer is easy to find especially if you imagine 1 thousand cars all trying to travel the distance at once
Why is the filament used in bulbs thin and long?
because the filament should be heated so the resistance should be high .so it uses a long and thin wire
Will a short thick metal wire have better resistance compared to a long narrow metal wire?
"Better" depends on how much resistance you need for your circuit design.A short thick wire will have less resistance than a long thin wire of the same substance.Whether that's better or worse depends on how you plan to use the wire.
Is the wire gets thicker or thin when the resistance is less?
Resistance of a wire is inversely proportional to the square of its radius.
Why the thin wire has grater resistance to electricity?
it has to do with ohms and the gauge of the wire. if you have a low ohms then you can't use a small thin wire. because the more ohms the more resistance. if you have a low omhs on a thin wire it can cause the wire to heat up. posibly catch fire.
Which has the greater resistance thick wire or a thin of the same length?
The thermal resistance of a wire is proportional to ln(r2/r1), meaning that a thicker wire has a greater thermal resistance.
Which has more resistance a thick or a thin wire?
For a given material, a wire of smaller cross-section will have higher resistance per unit length.
Which wire would have the lowest resistance a long thin iron wire at a high temperature or a short thick copper wire at a low temperature?
Copper will.
