Final answer:
All the mentioned sources (fluorescent lights, improperly routed power cables, and household appliances) are common sources of EMI, which can affect electronic devices by causing disruptions. Managing the EMI involves strategies like reducing usage time and energy efficiency improvements.
Step-by-step explanation:
A common source of EMI is d. All the above. Electromagnetic interference (EMI) can be emitted from various sources and can affect electronic devices by causing disruptions in their normal operations. Fluorescent lights, for example, can be a source of EMI due to the electrical energy changes they undergo when they are turned on or off. Similarly, improperly routed power cables can act as antennas that radiate or pick up EMI, thereby disturbing the normal function of electrical appliances. Household appliances also contribute to EMI through the electrical noise they generate when they operate.
EMI problems can sometimes be managed by reducing the time of use or by reducing the power consumption of the affected appliances or fixtures. Additionally, high frequency EM radiation photons are relevant to EMI because they carry more energy and have a greater ability to disrupt materials through the photoelectric effect, which is relevant to understanding how electromagnetic radiation can interact with electrical systems.