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solar power 1

Bobby

solar power class

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Across
2.interconnected system of PV modules that function as a single unit
6.british thermal unit
9.electronic device that allows current to flow in one direction only
10.switch gear used to connect or disconnect components
11.charge and discharge of a battery
14._________semiconductor. An undoped semiconductor
16.unit of power equal to 1 billion Watts
18.energy resulting from the flow of charge particles
21.flow of electrical energy in a conductor
22.unit of electrical current
24.nonmetallic conductor that carries current
25.chemical element used in making type of solar cells (Ga)
27.slender threadlike spike of pure crystalline material, such as silicon
28.chemical element used in making types of solar cells (Cd)
29.system that includes several different sources of electricity
Down
1.negative pole of electrolytic cell
3.long form of ac
4.device that converts dc to ac
5.metric unit of energy or work
7.an electrically charged atom or group of atoms that has lost or gained electrons
8.material which electricity is transmitted
9.addition of dopants to a semiconductor
12.capability of doing work
13.direct, diffuse and reflected solar radiation that strike a surface
15.unit that converts dc voltage to another dc voltage
17.stand alone
19.process of adding electrical energy to battery
20.repetitions per unit of time
23.two times of year when day and night are of equal length
26.intergrated system of electricity distribution, usually covering large area

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