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Ohms law. R = E/I,
where R= resistance in ohms, E = voltage in volts, and I = current in amperes.
What else can I help you with?
How do you calculate a cross-sectional area When all you know is resistance resistivity and length?
I think the equation you are looking for is Resistance (ohms) = Resistivity * Length / Area or R=p*L/A. This is the resistance of a circular wire with cross-section of A, length of L, and material with resistivity p. So to get area: Area = Resistivity * Length / Resistance.
What length of a copper wire 0.800-melimmeter in diameter has a resistance of 100 ohm?
Work it out for yourself. The equation you will need to use is: resistance = resistivity x (cross-sectional area / length) Manipulate the equation to make 'length' the subject, and use 17.25 x 10-9 ohm metres as the value of resistivity.
When a sample of germanium and silicon having same impurity density are kept at room temperature then resistivity of both?
The resistivity of germanium will decrease with increasing temperature due to a positive temperature coefficient of resistivity, while the resistivity of silicon will increase with increasing temperature due to a negative temperature coefficient of resistivity. At room temperature, silicon will have a higher resistivity compared to germanium.
If the diameter of wire is double what is resestivity?
The resistivity of a material does not depend on the diameter of the wire. Resistivity is an intrinsic property of the material and is constant regardless of the wire's diameter.
Do wires that have high resistivity have high conductivity also?
No. In fact it is the opposite. Conductivity is the reciprocal of resistivity so a high resistivity means low conductivity. peace.
What are the formulae of resistivity?
There is no 'formula' for resistivity. The resistivities of different conductors have been determined by experiment.
Can resistivity be negetive?
No, resistivity cannot be negative. Resistivity is a material property that indicates how strongly a material opposes the flow of electric current. It is always a positive quantity, even though some materials may have very low resistivity values.
What is the resistivity of deionized water and how does it compare to the resistivity of other types of water?
The resistivity of deionized water is high, meaning it is a good insulator. It is higher than the resistivity of tap water or seawater, which have more dissolved ions and conduct electricity better.
What is the resistance of a conductor of length 2 meters and area of cross section 1.55 meters square if restivity of the conductors is 2.8?
Work it out for yourself. The equation is: R = resistivity x (length/area). Incidentally, 1.55 m2 is an enormous area, if you are describing a conductor!!!! And 2.8 doesn't appear to represent a practical value of resistivity.
What is resistivity on what factor is depends?
Resistivity is a measure of a material's ability to resist the flow of electric current. It depends on factors such as the material's composition, temperature, and dimensions. Materials with high resistivity impede the flow of current more than those with low resistivity.
How are materials classified on the basis of resistivity?
Materials can be classified based on their resistivity as conductors, semiconductors, or insulators. Conductors have low resistivity, allowing electric current to flow easily. Semiconductors have resistivity in between conductors and insulators, and their conductivity can be controlled. Insulators have high resistivity and do not allow electric current to flow easily.
What is the value of resistivity of human skin?
The value of resistivity of human skin is 0.2 Ohm-meters
