The rating for a fuse used in a household electric circuit is provided on the basis of:

current

The correct answer is option 4. current.

The rating for a fuse used in a household electric circuit is provided on the basis of current.

The rating of a fuse indicates the maximum amount of current that can flow through it before it "blows" or melts, thus interrupting the circuit and protecting the electrical devices connected to it from damage due to excessive current. Fuses are designed to have a specific current rating that matches the expected maximum current draw of the circuit they protect. When the current exceeds this rating, the fuse melts, breaking the circuit and preventing further flow of electricity.

Therefore, when selecting a fuse for a household electric circuit, it is important to choose one with a current rating that matches or slightly exceeds the expected maximum current draw of the circuit to provide effective protection against overcurrent situations.