Source: https://guthlabs.ai/docs/instruments/ohm-s-law-solver/implementation/

instrument implementation / implementation-contract

# Ohm's Law Solver implementation

A source-bound implementation contract for Ohm's Law Solver; deployment and executable qualification remain separate.

Status: **VERIFIED_CLEAN**Lifecycle: **implementation-contract**

## Binding contract

This record describes what an executable surface must bind and validate. It does not claim that a public calculator, package, or production route is deployed.

**Record owner**: Guth Instruments

**Lifecycle**: verified-clean

**Evidence ID**: live-source boundary

**Effect**: Computation or source lookup only

## Input and validation requirements

The unrestricted input promise is unsafe at singular combinations such as V=12 V and R=0 ohms, where current and power are undefined. The solver must reject or explicitly flag these inputs instead of forcing a numeric result. A second degeneracy occurs at V=0 and I=0, where resistance is non-unique.

## Required corrections

No binding erratum is attached to this unique-name record. Implementers must still preserve the declared units, domain, and failure behavior.

## Inspectable interface fixture

The sample below is evidence for interface and validation tests, not a production implementation.

````
{
  "inputs": {
    "V": 12,
    "I": 2,
    "unit_V": "V",
    "unit_I": "A"
  },
  "expected_outputs": {
    "R": 6,
    "P": 24,
    "unit_R": "ohm",
    "unit_P": "W"
  },
  "working": "R = V/I = 12 V / 2 A = 6 ohm. P = V*I = 12 V * 2 A = 24 W."
}
````

## Other records

[01**Overview**](<https://guthlabs.ai/docs/instruments/ohm-s-law-solver/>)[02**Mechanism**](<https://guthlabs.ai/docs/instruments/ohm-s-law-solver/mechanism/>)[04**Qualification**](<https://guthlabs.ai/docs/instruments/ohm-s-law-solver/qualification/>)

## Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

- `VERIFIED_LEDGER.json`

- `evidence-tranche2/batch10-output.jsonl`