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| WheatStone bridge |
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| abdulsamaddabu:
Recently i studied the wheatstone bridge in me physics book in class but i could not understand it properly. I asked the teacher about my confusion but he also dont know. i have posted the picture of topic(wheatstone bridge). My question is ; 1.Why current I1 is following through point A to D in loop ADBA. 2.Why current I2 is following through point D to C in loop DCBD. My confusion is that why current are following through these two paths. As current always flow through level of a higher potential to a level of lower potential but here it seems opposite. |
| Beamin:
That's super hard to read can you take two pictures and turn it right side up? Then I can read it and be as baffled as you are. Cheating: http://www.daycounter.com/Calculators/WheatStone-Bridge/WheatStone-Bridge-Calculator.phtml What I do is put in the values then change one at a time and think about what it's doing as you go up/down or as you approach zero/infinity. |
| abdulsamaddabu:
i have uploaded the pic vertically but i dont know why it is flipped horizontally plz download the pic and flip it back i am very confused about this question |
| DannyTheGhost:
It's just a model to create equations based on Kirchhoff's rules. During this process you can assume any current direction in loop. Even if you were wrong with direction, the result will show you negative current. in case when there is no actual current, the result of equations will be 0. |
| hsn93:
i explain it to my self with this phrase: in math, current is a vector number, its just a number + direction.. if you used the negative you are just saying "the direction of (i.e. clockwise) has negative sign.. "flip the thing signs will flip with u.." |
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