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Compute material resistivity from measured resistance, length, and cross-sectional area, or solve for any variable in the relation R = ρ L / A.
Estimate lightning rod coverage, conductor lengths, project cost, and insurance payback for a residential lightning protection system.
Estimate how a material's electrical resistivity changes with temperature using a linear temperature coefficient.
Solve Ohm's law by entering any two of voltage, current, and resistance. Useful for electronics projects and circuit analysis.
Compute equivalent resistance for up to five resistors wired in series or parallel and estimate current for an optional supply voltage.
Estimate community antimicrobial resistance spread risk using antibiotic use, patient compliance, infection control, contact rates, and baseline resistance p...