Voltage or electric potential difference is denoted symbolically by ∆V, simplified V, or U, for instance in the context of Ohm’s or Kirchhoff’s circuit laws.

The potential energy for a positive charge increases when it moves against an electric field and decreases when it moves with the electric field; the opposite is true for a negative charge.

The summing of all voltage contributions to find the total potential field is called the superposition of electric potential. It is much easier to sum scalars than vectors, so often the preferred method for solving problems with electric fields involves the summing of voltages.

Potential difference is the difference in the amount of energy that charge carriers have between two points in a circuit. **Measured in Volts: **Potential difference (p.d.) is measured in volts (V) and is also called voltage. We use a voltmeter to measure potential difference (or voltage).

Voltage is the pressure from an electrical circuit’s power source that pushes charged electrons (current) through a conducting loop, enabling them to do work such as illuminating a light. In brief, voltage = pressure, and it is measured in volts (V).

Answer. 1–potential is a specific potential energy and its SI UNIT is Joule. 2 – potential difference is the difference in potential energy between two points. it’s SI UNIT is Volt.

Voltmeter Instrument

Ammeter

seismograph

Intensity: The severity of earthquake shaking is assessed using a descriptive scale – the Modified Mercalli Intensity Scale. Magnitude: Earthquake size is a quantitative measure of the size of the earthquake at its source. The Richter Magnitude Scale measures the amount of seismic energy released by an earthquake.

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