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It requires a force to propel an object through air, because of the air resistance. Normally, if there were no air resistance and the object were being propelled on the level with no friction, a constant force would accelerate the object steadily. However, it would require a steady force to propel the object through air even without acceleration. And the faster it went the more resistance it would meet.
Geoffrey Huels
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∙ 9y agoIt is related because the current and resitance makes a charge when you come together with both. They don't have a south or north pole at all. They are also related because when the two charges come together they will make one current/resistance charge which means it is a new charged built. basically resistance affects how much current can flow.
It means that current is proportional to 1 over the resistance, and vice versa.
Wiki User
∙ 12y agoThe voltage across a resistor is proportional to its resistance. More precisely it is the product of the resistance and the current that flows through it.
Voltage = resistance x current (U=R x I).
Wiki User
∙ 13y agoConductivity is the inverse of resistivity. (i.e. conductivity = 1/resistivity)
Resistivity is the resistance per metre of material. So a material will have a resistance of its length multiplied by its resistivity.
So the resistance of an object is calculated from conductivity of the material from which it is made and its length by resistance = 1 / (conductivity * length)
This makes no attempt to account for capacitance or inductance, so the impedance of a material would be calculated from conductivity as well as capacitance (or inductance) per unit length.
Wiki User
∙ 12y agoResistance is a measure of difficulty for current to flow. Resistivity is a constant for a material at a particular temperature measured in ohm metres. In simple terms it's how resistive something is per metre. But cross-sectional area is involved
Resistance=V/I
Resistivity=RA/L
combining the two together
Resistivity=VA/IL
where V=potential difference (voltage)
I=current
R=resistance
A= cross-sectional area
L=length
and the symbol for resistivity is roh a greek letter which looks like a p
Wiki User
∙ 14y agoV=I*R
Resistance = Voltage / Current
Wiki User
∙ 10y agoHow are insulators and resistance related
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What are mathematical relationship between resistance and specificconductivity constant?
Cell constant(C) = Resistance(R) X Specific Conductivity(K)
What materials are partially conductive?
conductivity is a result of free electrons meaning that they can be riped away fast and the temperature of the material. a colder material has a lower resistance and higher conductivity. materials like metallic oxides have low conductivity and materials like pure copper and aluminum have high conductivity.
Can heating devices be made by passing an electric current through a conductor of high resistance low resistance high conductivity low conductivity?
Heating is caused by current flow. Certain types of wire like tungsten emit more heat than other types. Lower resistance means higher current for a fixed voltage per Ohm's Law. So the efficiency of heating with electricity depends on the material of the conductor, the operating voltage and the resulting current. In most instances this will be a low resistance with high conductivity.
Why the resistance of semiconductors decreases when it is heated?
The conducter molecules are expanded causing a loss of conductivity resulting in resistance. also the molecules are moving more making it difficult for the current to navigate rush hour traffic.
How do you decrease air resistance?
Resitance of air varies based on: 1. Percentage content of moisture (higher the moisture, lesser the resistance) 2. Percentage content of suspended dust particles and conductivity of those suspended particles (higher the content, lesser the resistance)
What is the relation between hardness and conductivity?
Resistivity R is the inverse of conductivity G, R=1/G.
How Conduct related to conduction?
Conductivity is the inverse of resistivity. (i.e. conductivity = 1/resistivity) Resistivity is the resistance per metre of material. So a material will have a resistance of its length multiplied by its resistivity. So the resistance of an object is calculated from conductivity of the material from which it is made and its length by resistance = 1 / (conductivity * length) This makes no attempt to account for capacitance or inductance, so the impedance of a material would be calculated from conductivity as well as capacitance (or inductance) per unit length.
Define electrical conductivity?
Conductivity is the inverse of resistance. Since Ohm's Law states that current is voltage divided by resistance, it also states that current is voltages times conductivity.
When a material has high resistance what is low?
you can derive your answer from the equation G=1/R or R=1/G. Resistance and conductivity sitting in the opposite side from each other. Low Resistance conductivity (eg: cu) high Resistance conductivity (eg: glass) hope that helped.
What is the formula for conductivity?
1/specific resistance
What are mathematical relationship between resistance and specificconductivity constant?
Cell constant(C) = Resistance(R) X Specific Conductivity(K)
What are some examples of items with low conductivity?
Thermal resistance: diamond Electrical resistance: copper Optical resistance: quartz
Characteristics of copper?
Corrosion resistance and electrical conductivity. and its metal
What are the Factors that determine resistance value of electrical material?
The factors that determine resistance are thickness, length, temperature, and the conductivity of the resistance of an object
Can you put this in terms 168.2ms for conductivity that i can understand?
Siemens is a unit of conductivity - it is the reciprocal of resistance. Mhos is also used for this measure.
Which conditions make resistance small?
The resistance of a wire is the length divided by the cross-section area and the conductivity of the material. So for small resistance you need a wire with short length, large cross-section area (diameter) and a material with high conductivity like copper.
Can you represent electrical conductivity by finding its electrical resistance?
Conductivity is the reciprocal of resistivity, and is expressed in siemens per metre (S/m). Resistivity and, therefore, conductivity vary with temperature so are usually quoted at a specified temperature.Resistance is expressed in ohms. If you accurately measure the resistance, length, and cross-sectional area of a conductor, then you could determine its resistivity and, from that, its conductivity.
