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17 Nov 2024, 09:51
Kudos
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I think you have misinterpreted the question,
It provides a condition where r can be said to be combined resistance in a parallel circuit.
The following statement explains what the word combined means here. If you'll translate the words into an equation you'll see that
\(1/r = 1/x + 1/y\)
Hope this helps. Hit kudos, It motivates.
It provides a condition where r can be said to be combined resistance in a parallel circuit.
The following statement explains what the word combined means here. If you'll translate the words into an equation you'll see that
\(1/r = 1/x + 1/y\)
Hope this helps. Hit kudos, It motivates.
saransh2797
Thanks
16 Nov 2025, 18:08
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This question annoys me beyond belief. It reminds of taking a test and getting a question where no information is covered during the semester. Like I'm magically supposed to predict what random piece of information I need to know to answer a ridiculously out of scope question.
The missing piece that everyone is looking for is knowing how an electric circuit works. I can't imagine you'd even know this if you didn't take physics at any point in your life and if you're like me, I couldn't even tell you one equation from my physics class in high school much less a whole array of concepts surrounding circuits.
Resistance in Parallel For resistors connected in parallel
Total Resistance = 1/Rtotal = 1/R1 + 1/R2 + 1/R3 .... + 1/Rn
This is why you calculate the reciprocal of r instead of simply using r.
"In this case, if r is the combined resistance of these two resistors, then the reciprocal of r is equal to the sum of the reciprocals of x and y. What is r in terms of x and y?" - There is no way to understand that r is referring to reciprocal of r without knowing that to calculate the total resistance for connected parallel resistors means calculating the reciprocal of r and the reciprocal of the resistors being connected. You simply would have needed to just trust your gut here and done the math with the information given.
The missing piece that everyone is looking for is knowing how an electric circuit works. I can't imagine you'd even know this if you didn't take physics at any point in your life and if you're like me, I couldn't even tell you one equation from my physics class in high school much less a whole array of concepts surrounding circuits.
Resistance in Parallel For resistors connected in parallel
Total Resistance = 1/Rtotal = 1/R1 + 1/R2 + 1/R3 .... + 1/Rn
This is why you calculate the reciprocal of r instead of simply using r.
"In this case, if r is the combined resistance of these two resistors, then the reciprocal of r is equal to the sum of the reciprocals of x and y. What is r in terms of x and y?" - There is no way to understand that r is referring to reciprocal of r without knowing that to calculate the total resistance for connected parallel resistors means calculating the reciprocal of r and the reciprocal of the resistors being connected. You simply would have needed to just trust your gut here and done the math with the information given.
