Resistance of parallel resistors

AI Thread Summary
The discussion focuses on calculating the equivalent resistance of parallel resistors with values of 5 ohm, 20 ohm, 40 ohm, and 50 ohm. The formula for finding the equivalent resistance is provided as 1/Rx = 1/R1 + 1/R2 + 1/R3 + 1/R4. Participants suggest using the expression to compute the total resistance. The calculation involves finding the reciprocal of the sum of the reciprocals of each resistor's resistance. The equivalent resistance for the given values is determined through this method.
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If resistors of 5 ohm, 20 ohm, 40 ohm, and 50 ohms are parallel with each other, the equivalent resistance would most nearly be how many ohms?
 
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Have you no expression for the resistance of parallel resistors?
 
If resistors of 5 ohm, 20 ohm, 40 ohm, and 50 ohms are parallel with each other, the equivalent resistance would most nearly be how many ohms?

Well, do you have options? Sounds like a multiple choice question. Nearly how many ohms?

try 1/Rx = 1/R1 + 1/R2 + 1/R3 +1/Retc... !
 
1/((1/5)+(1/20)+(1/40)+(1/50))
 

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