<!DOCTYPE html>
<html lang="it">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Calcolatore Legge di Ohm</title>
<style>
body {
font-family: Arial, sans-serif;
background-color: #f4f4f9;
color: #333;
margin: 0;
padding: 0;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
}
.container {
text-align: center;
background: #fff;
padding: 20px 30px;
border-radius: 10px;
box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
width: 90%;
max-width: 400px;
}
h1 {
margin-bottom: 20px;
color: #0077cc;
}
.input-group {
margin-bottom: 15px;
}
.input-group label {
display: block;
font-weight: bold;
margin-bottom: 5px;
}
.input-group input {
width: 100%;
padding: 10px;
border: 1px solid #ddd;
border-radius: 5px;
}
button {
background-color: #0077cc;
color: #fff;
border: none;
padding: 10px 20px;
font-size: 16px;
border-radius: 5px;
cursor: pointer;
}
button:hover {
background-color: #005fa3;
}
.result {
margin-top: 20px;
padding: 10px;
background-color: #eaf4ff;
border-radius: 5px;
border: 1px solid #bcdfff;
}
</style>
</head>
<body>
<div class="container">
<h1>Calcolatore Legge di Ohm</h1>
<div class="input-group">
<label for="voltage">Tensione (V):</label>
<input type="number" id="voltage" placeholder="Inserisci la tensione">
</div>
<div class="input-group">
<label for="current">Corrente (I):</label>
<input type="number" id="current" placeholder="Inserisci la corrente">
</div>
<div class="input-group">
<label for="resistance">Resistenza (R):</label>
<input type="number" id="resistance" placeholder="Inserisci la resistenza">
</div>
<button ="calculateOhm()">Calcola</button>
<div class="result" id="result">
Inserisci due valori per calcolare il terzo.
</div>
</div>
function calculateOhm() {
const voltage = parseFloat(document.getElementById("voltage").value);
const current = parseFloat(document.getElementById("current").value);
const resistance = parseFloat(document.getElementById("resistance").value);
const resultDiv = document.getElementById("result");
if (!isNaN(voltage) && !isNaN(current)) {
const resistanceCalc = (voltage / current).toFixed(2);
resultDiv.textContent = `Resistenza calcolata: ${resistanceCalc} Ω`;
} else if (!isNaN(voltage) && !isNaN(resistance)) {
const currentCalc = (voltage / resistance).toFixed(2);
resultDiv.textContent = `Corrente calcolata: ${currentCalc} A`;
} else if (!isNaN(current) && !isNaN(resistance)) {
const voltageCalc = (current * resistance).toFixed(2);
resultDiv.textContent = `Tensione calcolata: ${voltageCalc} V`;
} else {
resultDiv.textContent = "Inserisci almeno due valori per calcolare il terzo.";
}
}
</body>
</html>