Final Answer:
The correct current value indicated in the 20mA position is 20 milliamperes.
Step-by-step explanation:
The selector being set to the 20mA position signifies that the measuring instrument is configured to measure currents in the milliampere range, specifically 20 milliamperes. In instruments like an ammeter, the dial or selector indicates the range of values it's set to measure.
When set to 20mA, it means the instrument can accurately measure currents up to 20 milliamperes. This position serves to ensure the accuracy and precision of the reading within that specified range.
This setting provides the instrument with the necessary sensitivity to accurately measure currents at the 20 milliampere level. In electrical measurements, using the correct range setting on the instrument is crucial to obtain accurate readings.
Different ranges allow for measurement of varying magnitudes of current, ensuring that the instrument is not overloaded or unable to provide an accurate reading.