Question 15. Isn\'t the correct answer Power because a kW-Hr is the units for po

Question

Question 15. Isn't the correct answer Power because a kW-Hr is the units for power?

eT2-Soln-PH-201-001 :( -Exam 2 T2 Soln ,a a. All balls have the same speed b. Ball A c. Ball B d. Ball C The unit Kwh (kilowatt-hour) is a common unit the electrical power companies use to charge their customers. In terms of physical quantity, which of the following quantities is this unit for? 15· a. poweir b. energyc. force d. time Section II: Do any TWO of the 3 problems (no. 16-18) and show all the details in the space provided. No credits for just putting down a correct answer, but partial credits will be given to correct steps (20% x 2-40%) CIRCLE the number of the problems you want to be graded! 12:21

Explanation / Answer

Kilowatt hour is the industrial unit for energy consumed.

Power (P) =(Work done or energy consumed) / time interval

So, energy consumed = Power * time interval

   = wat * hour= joule/sec *60*60sec

So kilowatt hour = 1000wat * 60*60 second = 36*10^5joule

Hence correct choice of answer is option 'B'.

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.