Circuit Builder
A sandbox for DC circuits: batteries, resistors, bulbs, and switches. Current paths update as you connect elements, supporting intuition for series, parallel, and Ohm’s law.
Who it's for: First circuits courses; labs before breadboarding.
Key terms
- Ohm’s law
- series
- parallel
- current
- voltage
- resistance
How it works
A toy series-loop builder: place components into six slots around a schematic path. Empty slot breaks the loop. Current follows I = ΣV/ΣR when every series switch is closed and the path is complete.
Key equations
Frequently asked questions
- Is this a full SPICE simulation?
- The goal is pedagogy: simplified ideal models that run in the browser. Quantitative behavior is illustrative; always verify critical designs with appropriate engineering tools.
More from Electricity & Magnetism
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Adjust voltage and resistance. See current change with interactive V-I graph.
Series & Parallel
Compare total resistance and current distribution side by side.
RC Circuit
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RC Filter (LP / HP)
Bode gain vs frequency, f_c at −3 dB; live sine V_in and V_out.
RL Circuit
Series RL: τ = L/R, i(t) rise & decay, v_L; DC steady i = V/R.
RLC Series (AC)
Resonance peak, |Z|, phase. I(f) curve and live V & I waves.