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Why two probe method is better than four probe method?
the question is wrongfour prob is better than two prob method as it eliminates the effect of wire imbedance as well as contact resistance
Determining the band gap of semiconductor by Four probe method?
You cannot determine band gap by four probe method.
In experiment to determine the energy band gap of ge crystal using four probe method why it is called four probe method?
Coz in this expermnt oven containing four probes is used to maintain the continuity with crystal
Why you measure resistivity and not resistance in four probe method?
Resistivity is a constant for a material as opposed to resistance which is dependent on size considerations. This is analogous to specific heat capacity and heat capacity. It can be said that resistivity is more useful for comparison because other factors (size) have been accounted for.In the case of using the four-probe method to measure the thickness of a thin film:ρ = (V/I) x (thickness of film) x (correction factor)We measure the current and voltage using the four-probe method, from which we can get the resistance between the probes. Knowing the resistivity, which is constant for the material and can be obtained from sources such as books, will enable us to relate the resistance to the dimensions of the film.
What is range of four probe?
The range of four probes gives you the material to test the probe. The best way to determine the optimum choice of the probe tip for specifications for a given material is the four points.
What is the advantage of four probe method over other conventional methods?
I assume you are referring to methods of measuring small value resistances, as in locating short circuits on a PC card. Two probe is the method used by standard ohm meters. This works OK for most resistance values, as the resistance of the leads & probes is much lower than the resistance being measured. But when the resistance being measured gets very tiny (e.g. a few milliohms) it fails as the resistance of the leads & probe are of the same order of magnitude and are in series with it. Four probe solves this problem by using two probes connected to a current source to drive the resistance and a separate two probes connected to a precision voltmeter calibrated in milliohms. The voltage drop in the leads due to the test current does not get measured by the calibrated voltmeter, as it does in two probe method. There is no voltage drop in the measurement leads as the voltmeter is high impedance.
What method would be useful to find the Least common multiple of a group of four number?
Prime factorization.
What probe flew by four planets?
That was "Voyager 2".
How many quarts of oil for a 1991 Ford Probe?
four
Why do you use four probe instead of using two probe for determining the band gap of semiconductor?
becz if we use two probes instead of four probes,the current will not flow uniformly to the germanium chip,so there will be more chances of error in d experiment.
When did Patricia E Bath get her first patent for the Laserphaco Probe?
The first of Patricia Bath's four patents related to the Laserphaco Probe was Number 4744360, issued May 17, 1988.
Spark plug gap 1990 probe 4 cylinder?
According to one of Fords websites : A 1990 Ford Probe , 2.2L four cylinder engine has the spark plugs gapped at : ( .044 inch )
