A short circuit is best described as which of the following?

• A. An unintended low-resistance connection in electrical circuits.
• B. A deliberate high-resistance path to limit current.
• C. A circuit with open, infinite resistance.
• D. A circuit with increased inductance.

Answer: (A)

A short circuit happens when current finds a path of very low resistance that bypasses the intended load in a circuit. In other words, instead of flowing through the device the circuit is meant to power, the current takes an unintended, easy route. That low-resistance bypass lets a large amount of current flow, which is why protection devices like fuses and breakers are used to interrupt the fault. The other descriptions don’t fit because a deliberate high-resistance path would limit current on purpose, an open circuit means no current at all because the circuit isn’t complete, and increased inductance changes how the circuit responds to changes in current but does not describe a bypass of the load.