- #1
amk_dbz
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I am having problem understanding the working of Stretched wire potentiometer.
Now the book says that the potential of a and A are same because the wire Aa has negligible resistance. That is were the problem comes for me. Suppose the batter connected to AB be of 10V (assume negative terminal to be of 0V) and the one connected to ab be 5V(assume negative terminal to be of 0V). Now the pt a is at 5V and A is at 10V, therefore current should flow from A to a, but this doesn't happen, Why?
Any help will be appreciated. Thank you.
(check the image of circuit diagram of potentiometer. Sorry for bad quality, I am not a good painter.)
Now the book says that the potential of a and A are same because the wire Aa has negligible resistance. That is were the problem comes for me. Suppose the batter connected to AB be of 10V (assume negative terminal to be of 0V) and the one connected to ab be 5V(assume negative terminal to be of 0V). Now the pt a is at 5V and A is at 10V, therefore current should flow from A to a, but this doesn't happen, Why?
Any help will be appreciated. Thank you.
(check the image of circuit diagram of potentiometer. Sorry for bad quality, I am not a good painter.)