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![[Post New]](/templates/default/images/icon_minipost_new.gif) 30 Jun 2007 22:19:57 IST
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What is the current through galvanometer in a balanced Wheatstone bridge ?
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Ken
From: UNITED STATES, Green Bay, Wisconsin
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30 Jun 2007 22:22:23 IST
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Dear experts , if the image is not visible then it doesn't matter. It was just a wheatstone bridge. Please , you can make a wheatstone bridge of your own, and then explain.I repeat , it is a balanced wheatstone bridge.
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Ken
From: UNITED STATES, Green Bay, Wisconsin
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30 Jun 2007 22:24:11 IST
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Its 0
That is how Wheatstones network is defined in the first place
also,
the 2 points of the galvanometer are basically EQUIPOTENTIAL Points....so as there is no P.D there is no current
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30 Jun 2007 23:38:00 IST
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when u r saying balanced wheatstone bridge, it means the galvanometer shows null deflection which means no current through galvanometer..
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1 Jul 2007 17:19:39 IST
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the position of the galvanometer??
if its the question when cell is replaced by the galvanometer...then the current trough galvanometer is zero...i couldn't prove it...i tried for quite a long time...but answer is surely 0....
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1 Jul 2007 19:38:37 IST
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Yes the current through the galvanometer in a balanced wheatstones bridge is ZERO
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1 Jul 2007 19:40:55 IST
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Ok I got it . Actually I knew it but still I had a doubt .Thank you everyone.
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Ken
From: UNITED STATES, Green Bay, Wisconsin
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2 Jul 2007 08:28:00 IST
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In a Wheatstone Bridge Since the ratio of the resistors a same . therefore the current through the galvano is 0 . That means no current flows through the Galvanometer when the ratio of P:Q = R:S is same
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2 Jul 2007 12:18:21 IST
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But wat will be the current through the galvanometer if in original Wheatstone network...position of cell and galvanometer is interchanged....
i know it is 0...but i couldn't prove it...
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29 Jul 2007 01:23:46 IST
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In a balanced wheatstone bridge, galvanometer shows zero deflection. That's how the working of wheatstone bridge is explained. As the 2 points joining galvan. are equipotential hence no current flows through galvanometer. Don't forget to rate me.
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