A fully-charged power bank with a full capacity of 100,000 mAH is used to supply a DC lamp of 12 ohms at a constant voltage of 24 volts for 35 hours. The said power bank is then used to power up a DC load requiring 3 A for 8 hours. What percentage of the full charge capacity of the power bank remains? If it is now used to charge a cellular phone and was drained in 12 hours, what is the average current requirement of the phone? How many free electrons are there in a rectangular block of a conductor whose dimension is 8 m by 4 m by 3 m? The electrons of this conductor have a drift velocity of 4 m/s when a 9.6 A of current is applied thru a cross-sectional area of 0.005 m². Use electronic charge of 1.6 x 10-19 coulomb per electron. Express your answer in scientific notation whose unit is electrons per cubic meter.

A fully-charged power bank with a full capacity of 100,000 mAH is used to supply a DC lamp of 12 ohms at a constant voltage of 24 volts for 35 hours. The said power bank is then used to power up a DC load requiring 3 A for 8 hours. What percentage of the full charge capacity of the power bank remains? If it is now used to charge a cellular phone and was drained in 12 hours, what is the average current requirement of the phone? How many free electrons are there in a rectangular block of a conductor whose dimension is 8 m by 4 m by 3 m? The electrons of this conductor have a drift velocity of 4 m/s when a 9.6 A of current is applied thru a cross-sectional area of 0.005 m². Use electronic charge of 1.6 x 10-19 coulomb per electron. Express your answer in scientific notation whose unit is electrons per cubic meter.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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