2020-9-8 · Circuit Lab is a Division C and Division B event for the 2021 season. It was previously an event in 2013, 2014, 2019, and 2020, when it was called Shock Value in Division B. Circuit Lab is a laboratory event which deals with the various components and properties of direct current (DC) circuits. Historically, the fields which have been tested in this event are DC circuit concepts and DC circuit