A shunt is best described as:

• A. A device which stores energy.
• B. A device that measures current.
• C. A device which allows electric current to pass around another point in the circuit.
• D. A device that breaks the circuit.

Answer: (C)

A shunt is a low-resistance path that provides a bypass around part of a circuit, letting current flow around another point. This bypass is especially useful because it creates a known, small voltage drop across the shunt, which can be used to infer the total current when read by a meter or sensor. In practice, the shunt doesn’t store energy, nor is it by itself a device that measures current (it works with a meter to do the measuring). It also doesn’t break the circuit; it simply provides an alternate route for the current. This description fits best as the mechanism that allows current to pass around another point in the circuit.