Answer:
Electric Power is transmitted using AC because ___________.
D. that's how it is produced by the generators
Step-by-step explanation:
Electric power is commonly transmitted using alternating current (AC) in power distribution systems. Alternating current is a type of electric current that periodically reverses direction.
AC is favored for long-distance power transmission for several reasons:
Efficiency: AC power transmission is generally more efficient over long distances compared to direct current (DC) transmission. This is because AC voltages can be easily transformed using transformers, allowing for voltage levels to be adjusted, which in turn affects current levels and thus reduces resistive losses during transmission.
Transformers: AC voltage can be easily transformed using transformers, which is crucial for stepping up the voltage at the generating station for long-distance transmission and stepping it down again for distribution to consumers. This reduces the current and therefore the energy lost as heat due to resistance in power lines.
Safety: AC systems have the advantage of being able to be easily converted to different voltage levels using transformers, which helps in distributing power at different voltage levels for various applications. This is important for the safety of consumers as well as efficient power usage.
Back-and-Forth Movement of Electrons: AC power oscillates between positive and negative values, causing electrons to move back and forth. This back-and-forth movement helps prevent the accumulation of charge at any specific point, reducing the risk of electrical discharge and making the transmission system more stable.
Historical Development: The development of AC power transmission was strongly influenced by the work of Nikola Tesla and George Westinghouse in the late 19th century. Their contributions helped establish AC as the preferred method for long-distance power transmission.