Dielectric strength is measured in which of the following units?

Dielectric strength refers to the maximum electric field that a material can withstand without experiencing failure or breakdown. This property is crucial in materials used for insulation, as it indicates their ability to resist electrical breakdown under voltage stress. The appropriate unit for measuring dielectric strength is volts per centimeter. This unit indicates the voltage required to cause a breakdown of insulation material over a certain distance, specifically a centimeter.

When referring to dielectric strength, it is important to understand that this measurement conveys the amount of voltage that an insulating material can tolerate before dielectric failover occurs. Using volts per centimeter allows for a clear representation of this relationship, relating the electric field strength directly to the physical dimensions of the material.

The other options, while related to electrical properties, do not represent dielectric strength accurately. For instance, amperes per meter pertains to current flow and density, ohms per kilogram relates to resistance characteristics in relation to mass, and joules per cubic meter commonly pertains to energy density, none of which directly describe the electric field strength capable of causing a dielectric breakdown.