WESTWARD EXPANSION INDUSTRIALIZATION URBANIZATION 1870 1900
SECOND INDUSTRIAL REVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Direct Current
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Alternative Current
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Electric light bulb
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Vitascope
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Detailed explanation-1: -While Edison championed direct current (DC) systems, Westinghouse promoted alternating current (AC) systems, and the competition between the two was fierce.
Detailed explanation-2: -Thomas Edison did not invent the light bulb.
Detailed explanation-3: -Alternating current reverses direction a certain number of times per second–60 in the U.S.–and can be converted to different voltages relatively easily using a transformer. Edison, not wanting to lose the royalties he was earning from his direct current patents, began a campaign to discredit alternating current.
Detailed explanation-4: -The electrical products developed by Thomas Alpa Edison (1847-1931), who were said to be the inventor king, were operated on DC power. So, he was aiming to transmit the generated electricity as a direct current. In fact, when he started his business in the 1880s, he used direct currents to transmit electricity.