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Temperature, Length of wire, Area of the cross-section of wire and nature of the material.
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Rene
RafaTemperature: (An increase in temperature will increase the resistance)
Cross Sectional Area: (The larger the wire, the less resistance)
The length of the wire: (The longer the wire, the more resistance)
The material of the wire: (Some materials are better conductors than others, and this causes less resistance)
A: The magnitude of resistance is depend on cross section of the wire the material constructed with and the additional strands of wire involved
AnswerResistance depends upon the length, cross-sectional area, and resistivity of a conductor. It is directly-proportional to the resistivity and length, and inversely-proportional to its cross-sectional area. As resistivity is affected by temperature, temperature indirectly affects resistance.
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Electrical resistance in a wire depends on the wire's?
It's dependent on the wire's composition. That is, what material it is made of. <<>> The electrical resistance in a wire depends on the wire's length and cross sectional area.
Two ways resistance of a wire can be increased?
The resistance of a wire is determined by the following formula. R = (rho)L/A, where the greek letter rho (it looks like a p) is a value assigned to a material based on how resistive it is by nature, L is the length of the wire, and A is the cross-sectional area (AKA how thick the wire is). Increase the length, or change the material to something with higher restistivity. Hope this helps!
If you have a circuit consisting of a battery and a wire What two factors determine the amount of current in the circuit?
The voltage of the battery, and the resistance of the circuit (including the resistance of the wire and the internal resistance of the battery).
What is the current through a wire that has a resistance of 30 ohms if the voltage is 45 volts?
If the resistance of the wire is 30 ohms and the voltage between the two ends of the wire is 45 volts,then the current through the wire isI = E/R = (45/30) = 1.5 amperes.
What part of the ohms scale of a meter are the most accurate resistance measurements made?
It really depends on what you are trying to get the resistance of. A piece of copper wire 30 feet long will only have a resistance of few ohms. A person can have a resistance of several million ohms. Making sure that your meter's leads are in good contact with whatever you are measuring is the best way to get an accurate reading.
