Ohm’s Law Calculator to Create Using JavaScript HTML With Example

Hello Friends Today, through this tutorial, I will tell you How to Write Program Ohm’s Law calculator using PHP with HTML. Below is a simple HTML file with JavaScript code to create an Ohm’s Law calculator. This calculator will allow users to calculate voltage, current, or resistance based on the values they input:

index.html

`<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Ohm's Law Calculator</title><style>body {font-family: Arial, sans-serif;margin: 0;padding: 0;}.container {width: 80%;margin: 0 auto;}input[type="number"] {width: 100px;}button {padding: 10px 20px;background-color: #4CAF50;color: white;border: none;border-radius: 5px;cursor: pointer;}button:hover {background-color: #45a049;}</style></head><body><div class="container"><h2>Ohm's Law Calculator</h2><label for="voltage">Voltage (V):</label><input type="number" id="voltage" step="any"><br><br><label for="current">Current (I):</label><input type="number" id="current" step="any"><br><br><label for="resistance">Resistance (R):</label><input type="number" id="resistance" step="any"><br><br><button onclick="calculate()">Calculate</button><br><br><div id="result"></div></div><script>function calculate() {const voltage = document.getElementById('voltage').value;const current = document.getElementById('current').value;const resistance = document.getElementById('resistance').value;let result = "";if (voltage === "" && current !== "" && resistance !== "") {result = "Voltage (V) = " + (current * resistance) + " volts";} else if (voltage !== "" && current === "" && resistance !== "") {result = "Current (I) = " + (voltage / resistance) + " amperes";} else if (voltage !== "" && current !== "" && resistance === "") {result = "Resistance (R) = " + (voltage / current) + " ohms";} else {result = "Please provide values for two fields.";}document.getElementById('result').innerText = result;}</script></body></html>`

This code creates an HTML page with input fields for voltage, current, and resistance, along with a button to calculate the missing value. When the user clicks the “Calculate” button, the `calculate()` function is called, which determines which value is missing based on the inputs provided and displays the result.

Ohm’s Law Calculator

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