Pertanyaan

3. Sebuah baterai disambungkan dalam sebuah rangkaian listrik selama 10 menit dengan arus tetap sebesar 2 A Artinya, pada rangkaian tersebut telah mengalir 7,5times 10^20 elektron. Benarkah pernyataan tersebut?Jelaskan! 4. Sebutkan ciri-ciri transmisilistrik dengan sistem tegangan tinggi!

Solusi

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Jawaban

3. To calculate the number of electrons, we use , where and . Then, where .4. Characteristics of high-voltage electrical transmission systems include reduced current for the same power level, larger spacing between conductors, use of transformers, enhanced insulation, and strict safety protocols.

Penjelasan

1. The question asks whether the statement about the number of electrons flowing in a circuit connected to a battery for 10 minutes with a constant current of 2 A is correct. To address this, we need to understand the relationship between electric charge, current, and the number of electrons. The charge in a circuit is given by , where is the current in amperes (A) and is the time in seconds (s). The charge of one electron is approximately coulombs. The number of electrons can be found using , where is the charge of one electron.2. For the second part of the question, it asks for the characteristics of electrical transmission in a high-voltage system. High-voltage transmission systems are designed to transmit electrical power over long distances efficiently. Key characteristics include: - Reduced current for a given power level, leading to less energy lost due to resistance in the transmission lines. - Larger spacing between conductors and between the conductors and the ground to prevent electrical discharge (arcing). - Use of transformers to step up and step down the voltage for efficient transmission and safe distribution. - Enhanced insulation and robust construction to withstand high voltages. - Strict safety and maintenance protocols due to the high risks associated with high voltage.