What symbol typically marks a cathode in electrical applications?

In electrical applications, the cathode is typically marked with a negative symbol. This is because, in a circuit, the cathode is the electrode through which current flows out of a device, such as a battery or a diode. In electrochemistry, the cathode is where reduction occurs, and electrons flow into the system, aligning with the negative charge.

Understanding the role of the cathode is essential in various applications, such as electronics and electrolysis. Using the negative symbol to represent it is consistent across most disciplines where electrical current is involved. This convention helps distinguish the cathode from the anode, which is marked with a positive symbol, indicating where current is entering a device.