Final answer:
Incorrect options have been presented in the question, as a selector set to 2 mA would reasonably show a current approximately equal to 2 mA. Typographical errors in the question may need correction for appropriate answer options.
Step-by-step explanation:
The student has asked what the correct current value is if the selector is in the 2 mA position. The options provided to the student do not match their measured range given in the context. Normally, if the selector is at 2 mA position, the current reading would be expected to be somewhere around 2 mA if measured accurately. An error appears to have been made in the question or selection of provided answers as neither 0.025 mA, 0.25 mA, nor 25 mA represents a current that would be displayed on a 2 mA scale setting.
For a magnetic field calculation using a Hall probe, and to find the correct current value or voltage across a resistor, one would apply Ohm's Law, V = IR, where V is the voltage, I is the current, and R is the resistance. However, because the options given do not align with the stated measurement setting, none of the provided answers would be correct under normal circumstances.