Resistance measurements processes || Two probe method || Four Probe Method || Van der Pauw Method

In this video, I have discussed about various resistance measurements processes. Two probe, Four probe, Van der Pauw method. Advantages and disadvantages are also discussed in this video. Sample size, correction factor, contact resistance are how affecting the measurements is discussed in detail.
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[@ankitlabh]

One of the best explanations on 4 probe methods. kudos.. great work

[@STPhys]

Thank You ❤️

[@ced3098]

Very interessing , thanks .

[@HPGamer428]

Why we apply correction factor when S>>t ? Some people say to remove contact resistance and you said conact resistance is already removed then when we apply G7 factor now I am confused resistivity not depend on dimensions so how resistivity change with thickness used

[@bongmovies1]

Good one

[@jagadishmahato9925]

Nice video, can you please tell some of the references for the explanation which one can read. Thank you

[@tuncaykilic7099]

can't you just measure the voltage at point 2 and 3 and subtract them to get the voltage across them? for four probe method.

[@STPhys]

Then it becomes similar to two probe method.

[@HPGamer428]

1)Why we use Point probe can we used wide probe 2) can we measure voltage from outer and current from inner probe 3) If current not constant then what happnen become where we measure voltage current not flows pelase clear this

[@gauravkumarsingh2066]

How we are saying that contact resistance is zero in 4 probe ? Clearly we can see current is coming after passing from contact resistance in both cases

[@HPGamer428]

Contact resistance hai kya jo probe mai hai bo ya kuch or agar aisa hai toh phir voltage drop nhi hoga 2,3 mai kyuki current negligible or flow hi nhi krega

[@salihcihangir7056]

Could you please share your references?

[@DC-zi6se]

Terrible explanation