Electricity In Agriculture
Electricity In AgricultureElectricity Plus Imagination
ObjectivesIdentify the importance of electricity in agriculture
on a hand out with 90% accuracy. Define key terms on a handout with
80% accuracy.Differentiate between an AC and DC circuit with 100%
accuracy on a handout.Compare insulators and conductors on a
handout with 100% accuracy.Calculate cost of electricity in a real
world environment with 80% accuracy.
Reasons to learnWhy is electricity important your life?Why is
electricity important in Agriculture?Why do we need to understand
how electricity works?
Questions To AnswerWhat are some terms associated with
electricity?What are some things that you use electricity for?What
are is the difference in AC and DC electricity?What are insulators
and conductors?
Types of currentElectric Current- is the flow of electrons in a
conductor
Advantages and Disadvantages AC ElectricityStandard useMore
powerTravels FartherDC ElectricityBatteriesSaferPortable
VocabularyElectricity- a fundamental form of energy observable
in positive and negative forms that occurs naturally (as in
lightning) or is produced (as in a generator) and that is expressed
in terms of the movement and interaction of electrons.Electric
Circuits- a continuous conductor that provides a path for the flow
of electrons away from and back to an electrical source.
More VocabularyWatts-Measuring unit of power. Amperage- the
amount of electric current flowing past a point in a circuit every
second. Voltage- potential force in an electrical system;
electrical pressure. Ohm-Unit of electric resistance. Voltage Drop-
decrease in voltage of a long span of wire because of increased
resistance. Conductor vs. Insulator Conductor- Material that have
little resistance of currentInsulator- Material that has strong
resistance of current
EquationsWatts= Volts X AmpsVolts= Watts/AmpsAmps=
Watts/VoltsKilowatt= Watts/1000Electric Cost= Kilowatt hrs. X Cost
of service
Reading an Electric Meter
Figuring Total Electric CostOriginal Reading is 35947Next month
reading is 42058Cost is $0.0175 per kilowatt hourWhat is the Cost
of electricity for that month?Solution42058-35947= 6111 kW h6111
kW-h X $.0175= $106.94
Figure Electric Bill5 amp fan operating on a 240V circuit. It
operates 12 hours a day for a week. The cost of electricity is
$0.02 per kilowatt hour. How Much does this fan cost for a four
week month? Solution5A X 240V= 1200W1200W / 1000= 1.2 kW1.2 kW X 12
hrs= 14.4 kW hrs per day14.4 kW hrs X 7 days= 100.8 kW hrs per
week100.8 kW hrs X 4 weeks= 403.2 kW hrs for month403.2 kW hrs X
$0.02= $8.064 for the month
