What unit is electric field strength measured in?

Electric field strength is measured in volts per meter (V/m). This unit indicates the amount of electric potential (in volts) experienced per unit distance (in meters) within an electric field. Essentially, it tells you how strong an electric field is in influencing charged particles within it.

In a practical sense, if you have a uniform electric field, and you know the voltage difference between two points within that field, you can calculate the electric field strength by dividing that voltage by the distance between the two points. This direct relationship highlights why the unit of measurement for electric field strength specifically combines volts and meters.

The other options refer to different electrical quantities. Amperes (A) measure electric current, which is the flow of electric charge; volts (V) measure electric potential or voltage itself; and ohms (Ω) measure resistance in an electrical circuit. Each of these is pertinent to electricity, but they do not represent the concept of electric field strength, which is why volts per meter is the correct unit.