Final answer:
Polarized capacitors have terminals that can be identified by markings on them, such as a code starting with the letter 'C' followed by a number or letter. Symbols on circuit representations of capacitors can also indicate the terminals, such as a curved plate for the negative terminal on an electrolytic capacitor.
Step-by-step explanation:
Polarized capacitors have terminals that are identified by markings on them. The most common convention for identifying the terminals is to use a code that begins with the letter 'C' followed by a number or letter. For example, a polarized capacitor may have terminals labeled as 'C1' and 'C2'. Another way to identify the terminals is through the use of symbols on circuit representations of capacitors, such as the curved plate on an electrolytic capacitor indicating the negative terminal.