What is the sensitivity setting on an amplifier that produces a vertical deflection of 1 cm with an input of 10mV?

The sensitivity setting of an amplifier describes how much vertical deflection is produced per unit of input voltage. In this case, you observed a vertical deflection of 1 cm for an input of 10 mV.

To determine the sensitivity, you can calculate how many millivolts correspond to one centimeter of deflection. Since a 10 mV input results in a 1 cm deflection, you can derive the sensitivity as follows:

1. Recognize that 1 cm is equivalent to 10 mm.

2. Therefore, for every 10 mV, the deflection is 10 mm (1 cm).

3. To find out the sensitivity in terms of mV per mm, divide the voltage by the deflection: 10 mV / 10 mm = 1 mV/mm.

That means for every 1 mV increase in input, the vertical deflection increases by 1 mm. This aligns with the sensitivity setting being 1 mV/mm.

Option A reflects this relationship correctly, thus confirming it as the appropriate sensitivity setting for the amplifier under the conditions stated.