Given a fact, create a question that can be answered using the fact. Construct the question such that it is unambiguous, has a unique answer and the answer can be given using the fact.

Q: Fact: a complete electrical circuit is a source of electrical energy

A: Which is a complete circuit?
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Q: Fact: a switch is used to stop the flow of current in an electrical circuit

A: A switch is used to stop the flow of currents which causes Joule heating in?
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Q: Fact: pushing a button sometimes completes a circuit

A:
A television may turn on at the push of a button because?
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