General Circuit

Find the potential difference V A V B V_{A}-V_{B} for the circuit shown below.


The answer is -2.444.

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1 solution

Steven Chase
May 6, 2020

This one is less trivial than one would think just by glancing at it. Start by declaring the potential at B B to be zero. Then write the nodal current sum equation for the green node. This results in a series of expansions and simplifications going from right to left.

@Steven Chase Exactly.

A Former Brilliant Member - 1 year, 1 month ago

@Steven Chase for the new problem I am getting 35.044 35.044

A Former Brilliant Member - 1 year, 1 month ago

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@Karan Chatrath There was an "equals" sign in my code that should have been a "plus sign". I have uploaded a corrected version of the problem. @Neeraj Anand Badgujar The answer is not 35.044, however

Steven Chase - 1 year, 1 month ago

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@Steven Chase Did you have changed any data??

A Former Brilliant Member - 1 year, 1 month ago

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@A Former Brilliant Member Same problem. Just different answer

Steven Chase - 1 year, 1 month ago

Thanks for clarifying.

Karan Chatrath - 1 year, 1 month ago

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@Karan Chatrath @Steven Chase ok Thanks in next 10 min ready for seeing my solution.

A Former Brilliant Member - 1 year, 1 month ago

@Karan Chatrath And the typo just happened to be in the z force equation, so it didn't cause me to get the previous question wrong.

Steven Chase - 1 year, 1 month ago

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@Steven Chase Oh, now it makes sense. Cause even I did your problem by tweaking the parameters from the previous one. Typos happen. It was fun to solve anyway, so thanks for sharing

Karan Chatrath - 1 year, 1 month ago

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@Karan Chatrath @Karan Chatrath @Steven Chase I am getting 727080.596 727080.596

A Former Brilliant Member - 1 year, 1 month ago

@Karan Chatrath and @Steven Chase Sir I have added 2 more methods of this Problem . Hope you enjoyed it.

A Former Brilliant Member - 1 year, 1 month ago

@Steven Chase sir are you posting 2nd order RLC circuit one problem? Please

A Former Brilliant Member - 1 year, 1 month ago

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I'll post one tomorrow

Steven Chase - 1 year, 1 month ago

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