Calculating Total Resistance in a Circuit - Tips and Tricks

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SUMMARY

The total resistance of a circuit composed of resistors in series and parallel can be calculated using specific formulas. In this discussion, resistors of 25k Ohms, 15k Ohms, 50k Ohms, 40k Ohms, and 20k Ohms are analyzed, with the 50k Ohm resistor in parallel with the 40k and 20k Ohm resistors. The effective resistance for parallel resistors is calculated using the formula 1/R_total = 1/R1 + 1/R2 + ... + 1/Rn. Clear circuit descriptions can be provided without diagrams by detailing the connections between terminals and resistors.

PREREQUISITES
  • Understanding of Ohm's Law
  • Knowledge of series and parallel resistor configurations
  • Familiarity with resistance calculations
  • Ability to interpret circuit descriptions
NEXT STEPS
  • Learn how to calculate equivalent resistance in parallel circuits
  • Study series and parallel resistor combinations in depth
  • Explore circuit simulation tools like LTspice for practical applications
  • Review Ohm's Law and its applications in electrical engineering
USEFUL FOR

Electronics students, electrical engineers, hobbyists building circuits, and anyone interested in understanding resistor configurations and calculations.

evanbarwise
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I'm wondering how to work out total resitance of a curcuit. The curcuit is made up of Kilo ohms.

25k Ohms
15k Ohms
50k Ohms
40k Ohms
20k Ohms

+ 10 V
 
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evanbarwise said:
I'm wondering how to work out total resitance of a curcuit. The curcuit is made up of Kilo ohms.

25k Ohms
15k Ohms
50k Ohms
40k Ohms
20k Ohms

+ 10 V


I forgot to add that 50k Ohms is parallel to 40k and 20k Ohms.
 
it IS actually possible to give description of a circuit in such a way that we don't need
a picture, but you need to work a bit harder to make it unambiguous.
Something like:

The positive terminal of the battery is connected to termial 1 of R1
Terminal 2 of R1 is connected to terminal 1 of R2
Terminal 2 of R2 is conected to terminal 1 of R3 and terminal 1 of R4
etc.
R1 = 25kOhm, R2=15kOhm etc.

Or you can post or link to a picture

(or post or include a picture)
 

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