Question 1 How many electrons pass a fixed point in a 100-watt light bulb in 1 hour if the applied constant voltage is 120 V? Question 2 The average current in a typical lightning thunderbolt is 2 x 10* A and its typical duration is 0.1 s (Williams, 1988). The voltage between the clouds and the ground is 5 x 10° V. Determine the total charge transmitted to the earth and the energy released. (Reference: Williams, E. R. 'The Electrification of Thunderstorms', Scientific American, Nov. 1988. pp. 88 – 89.) Question 3 A unit of power used for electric motors is the horsepower (hp), equal to 746 watts. How much energy does a 5-hp motor deliver in 2 hours? Express the answer in MJ.
Question 1 How many electrons pass a fixed point in a 100-watt light bulb in 1 hour if the applied constant voltage is 120 V? Question 2 The average current in a typical lightning thunderbolt is 2 x 10* A and its typical duration is 0.1 s (Williams, 1988). The voltage between the clouds and the ground is 5 x 10° V. Determine the total charge transmitted to the earth and the energy released. (Reference: Williams, E. R. 'The Electrification of Thunderstorms', Scientific American, Nov. 1988. pp. 88 – 89.) Question 3 A unit of power used for electric motors is the horsepower (hp), equal to 746 watts. How much energy does a 5-hp motor deliver in 2 hours? Express the answer in MJ.
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Russell E. Smith
Chapter12: Electronic Control Devices
Section: Chapter Questions
Problem 14RQ
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