If a spike measures 12mm at a sensitivity of 10uV/mm, what is the voltage?

To determine the voltage from a spike measured in millimeters at a specified sensitivity, you can use the formula:

Voltage (µV) = Spike Amplitude (mm) × Sensitivity (µV/mm).

In this scenario, the spike measures 12 mm and the sensitivity is 10 µV/mm. By plugging in the values:

Voltage = 12 mm × 10 µV/mm = 120 µV.

This calculation shows that the voltage corresponding to the spike is indeed 120 µV, confirming that the correct answer is the third option. The key to solving these types of problems lies in accurately applying the relationship between the amplitude of the spike, the sensitivity, and the voltage conversion factor.