Cathode

The video explains the role of the cathode in different systems. In devices that consume power, the cathode is negative, while in those that provide power, it is positive. In electrolysis, the cathode is a negatively charged electrode connected to the negative terminal of an electric supply, attracting positive ions that gain electrons.

In a device that uses power, what is the charge of the cathode?

• Positive

• Negative

• Neutral

• Variable

What is the charge of the cathode in a device that supplies power?

• Positive

• Negative

• Neutral

• Variable

In electrolysis, what type of ions are attracted to the cathode?

• Negative ions

• Electrons

• Positive ions

• Neutral atoms

During electrolysis, what happens to the ions at the cathode?

• They become neutral

• They remain unchanged

• They gain electrons

• They lose electrons

What is the role of the cathode in electrolysis?

• It attracts negative ions

• It attracts positive ions

• It repels positive ions

• It repels electrons