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How does resistance change when the cross-sectional area of a wire changes?
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Why does high power magnification change the area of the slide?
It doesn't change the area of the slide. What it changes is the area in the field of view.
How will the pressure of an object change if its area is doubled?
It won't. The pressure within a hollow object may change if the surface area changes, hence the volume. The total pressure acting on the exterior of a solid object may change if the total surface area changes.
How do you reduce resistivity of a wire length and diameter should be equal or length should be halve or both should be halved or length should b doubled and diameter should be halved or diameter doub?
'Resistivity' is usually considered to be a property of a substance, not a structure.In the normal unit of resistivity, the length and cross-section area are divided out,so they don't affect the 'resistivity.In the case of your piece of wire, the only characteristic that it seems reasonableto discuss is just plain good old 'resistance'.I think the point of this question is to investigate the relative effects ... of a changein length compared to the same change in diameter ... on the initial resistance of apiece of wire.Length:The resistance of the sample is directly proportional to its length.Diameter:The resistance of the sample is inversely proportional to the cross-sectional area,which is the same as saying 'inversely proportional to the square of the diameter'.So, let's look at the choices listed in the question:Change length to 1/2:Resistance changes to 1/2 .Change length and diameter both to1/2 :Resistance changes by factor of 1/2 x 4 = 2Length doubles, diameter 1/2:Resistance changes by factor of 2 x 4 = 8 timesLength doubled, diameter doubled:Resistance changes by factor of 2 x 1/4 = 1/2The first and last choices both reduce the resistance.The others both increase the resistance.
What happens when the distance is kept constant and the force changes?
There will be a change in the area/volume, depending on the direction of the force applied.
What is air resistance affected by?
Air resistance is affected by surface area and Shape
The resistance of a wire depends on the?
The length, cross-sectional area, and resistivity. As resistivity changes with temperature, temperature indirectly affects resistance.
How do you calculate injection pressure from product before injection molding?
By deviding the multification of line pressure and screw dia with the crosssectional area of hydralic cylinder piston.
Why does high power magnification change the area of the slide?
It doesn't change the area of the slide. What it changes is the area in the field of view.
Why does the area of a rectangle change?
if you change the side length the area will change. It is possible to change them and not change the area. For example make side twice and long and the other half as long. But in general, if you change the lengths of the sides the area of the rectangle changes.
How will the pressure of an object change if area is doubled?
It won't. The pressure within a hollow object may change if the surface area changes, hence the volume. The total pressure acting on the exterior of a solid object may change if the total surface area changes.
How will pressure of an object will change if its area is doubled?
It won't. The pressure within a hollow object may change if the surface area changes, hence the volume. The total pressure acting on the exterior of a solid object may change if the total surface area changes.
How do you find length and crosssectional area of a wire given just resistancevolume and resistivity?
Resistance varies directly as length Resistance varies inversely as cross-sectional area Hence R varies as L and R varies as 1/A Thus R = r(L/A) where r is the coefficient of resistance of the wire. If the wire is of uniform cross section, then A = V/L where V is the volume of the wire. Hence now we have R = r(L/(V/L)) or R = r(L-squared/V) or L-squared = (RxV)/r and so the answer would be L = square-root of (RxV)/r
How does area change when the length changes?
When length gets longer the area will be larger. As the length gets shorter the area will be smaller.
How does a skydiver change his or her speed?
Just as a leaf falls slower to the ground than a tennis ball, a skydiver changes his/ her body position to change the amount of surface area that is affected by air resistance. A flatter body position, for example, will slow a skydiver's freefall rate from a normal arched position.
What kinds of changes occur as an air mass moves over an area?
there could be a temperature change, or a physical change.
How will the pressure of an object change if its area is doubled?
It won't. The pressure within a hollow object may change if the surface area changes, hence the volume. The total pressure acting on the exterior of a solid object may change if the total surface area changes.
What happens to the resistance as the area increases?
Double the area means half the resistance. Resistance = resistivity times length / area. Resistivity is a property of the material only.
