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Multiple Choice

What does mV/cm stand for?

mV/cm expresses electric potential difference per unit length, i.e., how many thousandths of a volt exist for each centimeter of distance. The mV stands for millivolts (one thousandth of a volt) and cm is a centimeter. So this unit describes electric field strength along a length of one centimeter. For example, 5 mV across 1 cm equals 5 mV/cm; 1 V across 100 cm equals 0.01 V/cm, which is 10 mV/cm, showing how the value scales with distance. This differs from microvolts per centimeter (which would be much smaller), volts per centimeter (which uses volts instead of millivolts), and millivolts per meter (which uses meters instead of centimeters). The correct interpretation is millivolts per centimeter.

mV/cm expresses electric potential difference per unit length, i.e., how many thousandths of a volt exist for each centimeter of distance. The mV stands for millivolts (one thousandth of a volt) and cm is a centimeter. So this unit describes electric field strength along a length of one centimeter. For example, 5 mV across 1 cm equals 5 mV/cm; 1 V across 100 cm equals 0.01 V/cm, which is 10 mV/cm, showing how the value scales with distance.

This differs from microvolts per centimeter (which would be much smaller), volts per centimeter (which uses volts instead of millivolts), and millivolts per meter (which uses meters instead of centimeters). The correct interpretation is millivolts per centimeter.