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If you slice a wire cleanly and then look at the cut end, you see a little circle at the end.
The area of that circle is the "cross-sectional area" of the wire. The larger that area is,
the lower the DC resistance of the wire is.
Sherwood Ritchie
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Is the resistance of the wire directly or inversely proportional to the cross-sectional area of the wire?
When it is on the cross-sectional area it is inversely proportional to the wire,otherwise it is directly proportional to the wire.
Do bend in the wire effect the electric resistance?
The resistance is based on the cross sectional area. It is conceivable that you could bend a wire in such a way as to affect the cross sectional area, but unlikely.
What is the mean of 3 29 wire?
3 is the number of conductors and 29 is wire gauge(either in diameter or cross sectional area)
Does resistance increase as the cross-sectional area of the wire?
the resistance can never increase or decrease....... (you can't open the resistor and take out the something and make the resistance increase or decrease)AnswerSince resistance is directly proportional to the length of a conductor, increasing the length of a wire will increase its resistance. For example, if you double its length, you will double its resistance.
What will happen to the resistance of a wire if it is stretched to increase its length by 4 times?
Assume that the increase in length is achieved by uniform reduction in the cross-sectional area of the wire. Then an increase in length by 4 times will result in the cross sectional area being reduced to a fifth of it original value. This will increase the resistance to five times its previous value.
Is the resistance of the wire directly or inversely proportional to the cross-sectional area of the wire?
When it is on the cross-sectional area it is inversely proportional to the wire,otherwise it is directly proportional to the wire.
Do bend in the wire effect the electric resistance?
The resistance is based on the cross sectional area. It is conceivable that you could bend a wire in such a way as to affect the cross sectional area, but unlikely.
What happens to the cross-sectional area of metal wire if you double the diameter?
If the diameter doubles (x2), the cross-sectional area quadruples (x4).
How do you work out the cross-sectional area of a wire?
Imagine the wire is straight, now cut through at right angle to the centre line, the exposed surface is the cross sectional area, on a round wire it = pi * radius2 (area of a circle)
How does the cross sectional area of wire affect resistance?
Other things being equal, more cross-sectional area will cause less resistance.
What type of wire increases when it is made thinner?
Since resistance is inversely-proportional to cross sectional area, the lower the cross-sectional area, the higher the resistance. So ALL types of wire exhibit this behaviour!
What happens to its cross-sectional area of the metal wire if you double the radius?
It quadruples.
What is cross-sectional area of a wire if its outside diameter is 0.0625 inch?
0.0031
The magnitude of the resistance of a wire depends on?
Temperature, Length of wire, Area of the cross-section of wire and nature of the material.
What is the Change in resistance of wire when its length is double?
Assuming the wire follows Ohm's Law, the resistance of a wire is directly proportional to its length therefore doubling the length will double the resistance of the wire. However when the length of the wire is doubled, its cross-sectional area is halved. ( I'm assuming the volume of the wire remains constant and of course that the wire is a cylinder.) As resistance is inversely proportional to the cross-sectional area, halving the area leads to doubling the resistance. The combined effect of doubling the length and halving the cross-sectional area is that the original resistance of the wire has been quadrupled.
How does a resistance of a wire depend on its radius?
Resistance is inversely-proportional to the cross-sectional area of a conductor. For example, doubling its cross-sectional area will halve its resistance, while halving its cross-sectional area will double its resistance.Since the cross-sectional area of a circular-section conductor is proportional to the square of its radius, doubling that radius will reduce its resistance by one quarter, while halving its radius will quadruple its resistance.
What is the function of a wire gauge?
The gauge of a wire measures its cross-sectional area and helps determine its current carrying capacity.
