increase the amount of current. reverse the current's direction. stop the current. accelerate the current.
I gave my students this multiple choice question: A switch that can open or close an electric circuit can be used to

Only one answer is correct among these 4 choices:
- increase the amount of current.
- reverse the current's direction.
- stop the current.
- accelerate the current.

Could you tell me which one is correct?

stop the current.