Special Missions Aviation (SMA) Block 1 Practice Test

In an open circuit:

The circuit self-cleans The voltage doubles The circuit is broken so that current is no longer able to pass Current flows normally in a loop

Correct Answer:

The circuit is broken so that current is no longer able to pass

Explanation:

An open circuit means there is a break in the conducting path so the loop isn’t completed. Because there’s no closed path, current has no route to follow, so it cannot flow—even when a voltage source is connected. The voltage can still exist across the gap, but the current is effectively zero since the path’s resistance is infinite at the break. This aligns with I = V/R: with the path broken, current cannot pass. The other statements imply a closed loop or active current flow, which isn’t the case in an open circuit.

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