Voltaggio

Voltaggio is the Italian term for voltage, the electric potential difference between two points in an electrical circuit or field. It quantifies the energy per unit charge that would be required to move from one point to the other. The SI unit is the volt (V); one volt equals one joule per coulomb. The potential difference is often denoted by V or ΔV.

In direct current (DC) circuits, voltaggio is typically constant; in alternating current (AC) circuits it varies with time, commonly described by its instantaneous value v(t) or by an effective value (root-mean-square, RMS).

Measuring voltaggio requires a voltmeter or a digital multimeter; the device is connected across the two points whose voltage is to be measured, i.e., in parallel with the element.

Relation to current and resistance: Ohm's law relates voltage, current, and resistance as V = IR for a linear resistor. Electrical power is given by P = VI, where V is the voltage, I is current, and P is power.

Applications and safety: Voltaggio is a fundamental parameter in electrical and electronic design, power distribution, and telecommunications. High voltages pose safety hazards; proper insulation, grounding, and adherence to standards (for example IEC or national regulations) are required.