In order to protect internal circuits, how is the 10 amp input jack on a digital multimeter usually protected?

The 10 amp input jack on a digital multimeter is typically protected by a fuse. This design feature ensures that in the event of an overload situation—such as when the current exceeds the specified limit—the fuse will blow and interrupt the circuit before any internal components can be damaged. This is crucial for maintaining the integrity of the multimeter and protecting sensitive electronics within the device from excessive voltage or current, which could lead to malfunction or failure. Fuses are a standard safety measure in electrical devices and are critical for preventing potentially hazardous situations during measurements.