Which kind of nuclear reaction is currently used to generate electrical energy?

Explanation

**Step-by-Step Solution:**

1. **Understanding Nuclear Reactions**: Nuclear reactions involve changes in the nucleus of atoms. There are two main types of nuclear reactions: nuclear fission and nuclear fusion.

2. **Identifying the Process Used for Energy Generation**: The question specifically asks about the type of nuclear reaction used to generate electrical energy.

3. **Nuclear Fission**: The process that is currently used to generate electrical energy is called nuclear fission. This process involves the splitting of heavy atomic nuclei, such as uranium, into smaller nuclei.

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