Explain the Water pump analogy on pg 560 in your own words! (PAGE 560 IS ATTATCHED BELOW) :) LEARNING TIPA Model for Electric Potential EnergyVolts and VoltageFigure 1 shows a simple circuit in which a motor is connected to an electriccell. Stored electrical energy in the cell causes the shaft of the motor to spin.Lets use an analogy to help visualize whať's happening inside this circuit.For centuries people have used the energy of falling water to pushwaterwheels. This is possible because water above the wheel has moregravitational potential energy than it does below the wheel. As water falls,some of this energy is used to spin the waterwheel. To keep the wheelspinning you need a steady supply of falling water such as a fast-flowingstream. If this is not available, a pump can be used to push water up to itsoriginal position. As water is pumped to its original position, its gravitationalpotential energy also increases to its original amount (Figure 2(a)).Similarly, there is a potential difference between the two terminals of anelectric cell. Electrons leave the negative terminal with electric potentialenergy that can be used to operate a motor. As a result, the electrons returnto the positive terminal of the cell with less electric potential energy thanthey started with, because some of their energy was used to run the motor(Figure 2(b)). Once inside the cell, chemical reactions "re-energize" theelectrons and send them out the negative terminal again. In this way, theelectric cell acts like the pump in Figure 2(a).In science, we use an italic V torepresent potential difference, orvoltage, to avoid confusing it with thesymbol for volt (V).Figure 1 A battery connected to a motorDID YOU ΚΝOW?waterflowhighpotentialelectronflowMeasuring the Voltage of BatteriesWhen you check if a battery is stillenergyhigh electric potentialwaterwheelgood, you need to check the voltagedrop across the two terminals.To measure the voltage, connectenergymotorthe positive lead of a voltmeter to thepositive electrode of the battery. Thepositive electrode is usually markedbatterypumplow potential energywith a + sign. Then connect thenegative lead of the voltmeter to thenegative electrode of the battery.If you measure a voltage lessthan the rated voltage for the battery,it means that the battery is weak. Ifyou measure O V, the battery is dead.Recall that a voltage of zero meanslow electric potentialenergy(a)Figure 2 (a) A pump provides potential energy to the water, which can then turn a waterwheel.(b) A potential difference is necessary for current to flow in a circuit. Within the battery, theelectrons flow from the negative electrode (higher electric potential energy) to the positive electrode(lower electric potential energy).that no current will flow.

The energy can be transformed from one form to another. But the most important aspect of this…

Answered: water flow high potential energy…

water flow high potential energy electron flow waterwheel high electric potential energy motor battery pump low potential energy low electric potential energy

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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