Fullform of STEM? Science Technology Electronic Mechanics Science Technology Engineering Maths Science Technology Electronic Maths Science Technology Engineering Mechanics. What is AC and DC? Activate Current and Deactivate Current Alternate Current and Deactivate Current Activate Current and Direct Current Alternate Current and Direct Current. Voltage, Current and Resistance Refered as? V, C and R V, T and R V, I and R V, R and A. What are all there in Atom? Proton Protien Nuetron Electron. Voltage is represented by the water ____________. LED stands for ____________? Light Electric Device Light Electric Diode Light Emitting Device Light Emitting Diode.