Engine 2014: Electricity

1. A when the anode is more negative than the cathode and when the gate is briefly pulsed with a voltage more negative than the cathode
2. B when the anode is more negative than the cathode and when the gate is briefly pulsed with a voltage more positive than the cathode
3. C when the anode is more positive than the cathode and when the gate is briefly pulsed with a voltage more positive than the cathode
4. D when the anode is more positive than the cathode and when the gate is briefly pulsed with a voltage more negative than the cathode

Tip: press A-D to answer