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Author Question: Various new quantities are introduced in this chapter, each having associated units. Which of the ... (Read 73 times)

khang

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on: Jul 28, 2018
Various new quantities are introduced in this chapter, each having associated units. Which of the following quantities is followed by the wrong SI unit for that quantity?
  1.resistivity, m
  2.temperature coefficient of resistivity, (C)-1
  3.electric power, kWh
  4.drift speed, m/s

Question 2

An electric heater is operated with a potential difference of 100 V. If the heating element has a resistance of 20 ohms, what is the power output of the heater and what is the current through it when operating?
  1.2000 W, 5A
  2.2000 W, 25 A
  3.500 W, 5 A
  4.500 W, 25 A


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dreamfighter72

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Reply #1 on: Jul 28, 2018
Answer to Question 1

3

Answer to Question 2

3


khang

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Reply 2 on: Jul 28, 2018
YES! Correct, THANKS for helping me on my review

mohan

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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