Series, parallel and conservation
22 min · BeginnerUnderstand the concept
Kirchhoff's current law relates the currents entering and leaving a node. Kirchhoff's voltage law balances potential rises and drops around a loop. These conservation constraints let you reason about circuits before touching hardware.
Read the associated publisher material for deeper derivations, lectures and problem sets. This summary is an independent Harderware explanation.
Your exercise
Compare two 1 kΩ resistors in series and in parallel. Compute equivalent resistance for each arrangement.
Practice in simulation or at safe low voltage unless supervised by qualified personnel. Follow official equipment safety guidance.
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Knowledge check
What is the resistance of two 1 kΩ resistors in series?
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