Rhetorical Question is a question that is asked but an answer is really not expected; it is a question meant to make the listener think. For example, “are you really going to wear that?”
I like using such questions in my lectures to help my learners think beyond the lesson. “Would you want this to happen to you?” related to a negative result from a poor clinical decision choice. I think it helps strengthen the topic and helps learners think about the negative ramifications of the improper procedure/decision. I also use such questions to emphasize great results. “Now, who wouldn’t want to do such a great job!”.
When used appropriately, this is a strong teaching tool.