Question

A large cooler is filled with water, as shown below.

A large yellow cooler with a white valve at its bottom.
How does the valve on the cooler compare with the switch in an electric circuit?

Opening the valve allows water to flow, just like opening a switch allows charges to flow.
Opening the valve stops the flow of water, but closing a switch stops the flow of charges.
Closing the valve stops the flow of water, but opening a switch stops the flow of charges.
Closing the valve allows water to flow, just like closing a switch allows charges to flow.

Answer 1

"Closing the valve stops the flow of water, but opening a switch stops the flow of charges."

Explanation: A closed (shut) valve blocks water; an open switch breaks the circuit and stops current. (Conversely, opening a valve or closing a switch allows flow.)