The color of the wire that is connected between a switch and a lamp in domestic installation is a.blue b.brown c. purple d. yellow To avoid voice signal attenuation (i.e. signal decay) between intercom units, we need a higher voice loudness b.high-Power Audio Amplifier c.higher cross-sectional area intercom cables d .higher output voltage for the intercom transformer The ballast and the starter work together for generating a necessary over current to cause ionization in the fluorescent lamp tube a False b. True