opsticks light source 20W (Warm white), chopsticks tube 20W (Daylight), 11W LED bulb, 40W incandescent lamp, 100W incandescent lamp, 50W LED spotlight tube and 500W halogen lamp. Energy f. r solar cells of each lamp type The results showed that solar cell types Polycrystalline 30W is more efficient in generating electricity than the 23.53% ...