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Multiple Choice

Which abbreviation stands for Millivolts per centimeter?

Understanding this starts with how unit abbreviations are built. Millivolt, the unit for a thousandth of a volt, is written as mV. When you express a value per distance, you attach per centimeter (cm). Put together, millivolts per centimeter is written mV/cm. The other options point to different scales (microvolts per centimeter would be μV/cm, volts per centimeter would be V/cm) or use the singular form, which doesn’t change the meaning but isn’t the standard way people write the quantity. The phrase “millivolts per centimeter” matches the abbreviation mV/cm.

Understanding this starts with how unit abbreviations are built. Millivolt, the unit for a thousandth of a volt, is written as mV. When you express a value per distance, you attach per centimeter (cm). Put together, millivolts per centimeter is written mV/cm. The other options point to different scales (microvolts per centimeter would be μV/cm, volts per centimeter would be V/cm) or use the singular form, which doesn’t change the meaning but isn’t the standard way people write the quantity. The phrase “millivolts per centimeter” matches the abbreviation mV/cm.