when testing for a voltage drop, always have ...
when testing for a voltage drop, always have the circuit: a. turned on. b. turned off. c. connected, but off. d. disconnected.
Answer
# Answer:
A. Turned on.
# Brief Explanations:
To measure voltage drop, current must flow. The circuit needs to be turned on to have current flow and enable the measurement of the potential - difference (voltage drop) across components.