What is the significance of the meter specification of ohms per volt?

The meter specification of ohms per volt signifies the internal resistance of the measuring device at a specific voltage. This specification, often referred to as the input impedance of the meter, indicates how much resistance the meter itself presents to the circuit being measured. A higher value in ohms per volt implies that the meter draws less current from the circuit, ensuring that the measurement does not significantly affect the circuit operation.

This aspect is particularly important when measuring in circuits with high impedance, as a meter with low internal resistance could lead to inaccurate readings by influencing the circuit under test. Therefore, understanding this specification helps technicians select appropriate measuring instruments that do not interfere with the functioning of the system being analyzed.

Focusing on other choices, power efficiency does not directly relate to this specification. Current rating pertains to the amount of current a device can handle but does not define the relationship between resistance and voltage. Voltage drop pertains to the loss of voltage across components in a circuit and does not specifically address the internal resistance of a meter.