Examples
Examples
Try the starting example
- One-way wire length (metres)
- 10
- Measured wire resistance per conductor (ohms/metre)
- 0.02
- Concurrent feeder current (amperes)
- 2
- Source voltage (volts)
- 12
- Illustrative voltage drop (volts)
- 0.8
- Illustrative load voltage (volts)
- 11.2
- Wire resistive loss (watts)
- 1.6
Try another scenario
- One-way wire length (metres)
- 15
- Measured wire resistance per conductor (ohms/metre)
- 0.015
- Concurrent feeder current (amperes)
- 3
- Source voltage (volts)
- 14
- Illustrative voltage drop (volts)
- 1.35
- Illustrative load voltage (volts)
- 12.65
- Wire resistive loss (watts)
- 4.05
Calculation method
Calculation method
Illustrative voltage drop (volts)
2×one-way length×resistance per metre×current.
Illustrative load voltage (volts)
Source voltage−drop; negative indicates inconsistent constant-current scenario.
Wire resistive loss (watts)
Current²×2×length×resistance per metre.
Symbols and units
- a
- One-way wire length (metres)
- b
- Measured wire resistance per conductor (ohms/metre)
- c
- Concurrent feeder current (amperes)
- d
- Source voltage (volts)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Resistive DC illustration with paired identical supply and return conductors; no conductor rating or safety assessment. Supported limits: All numeric inputs and computed intermediates must remain finite. Supported numeric input magnitude is zero or 1e-12 through 1e12 in absolute value; reject values outside this bounded range. All lists/JSON record tables are limited to 100 records unless a stricter bound is stated; reject malformed record arity and wrong member types. All numeric values must be finite. Lists contain at most 100 records; required lists must be nonempty. Rates, probabilities and fractions are entered as fractions, not percentages; fractions must be between 0 and 1. Use a single consistent user-selected currency for all amounts; no exchange-rate conversion.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.