Mechatronic Systems Engineering 2201A/B Study Guide - Fall 2018, Comprehensive Midterm Notes - Voltage, Kirchhoff'S Circuit Laws, Electric Charge
12 Oct 2018
School
Department
Professor
Mechatronic Systems
Engineering 2201A/B
MIDTERM EXAM
STUDY GUIDE
Fall 2018
Source of Energy
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Means of Information Processing
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Uses:
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Electricity: naturally occurring phenomena resulting from the presence and flow of electric
charge
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Positive (+)
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Negative (-)
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Two types:
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Measured in coulombs (C)
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Electric Charge: fundamental physical quantity
Charge is a property of subatomic particles: proton & electron
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Proton: subatomic particle with charge equal to +1 of elementary charge
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Electron: subatomic particle with charge equal to -1 of elementary charge
1 Elementary charge Coulombs
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Similar charges repel and opposite charges attract
Electric Charge
Electric Current: movement of electric charge
: current
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: charge that flows through a cross section over time
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Electric Current is time rate of flow of electrical charge:
Electric Current
Electricity
Circuit Concepts and Diagrams Page 1
find more resources at oneclass.com
find more resources at oneclass.com
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1 Ampere
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Electric current is measured in amperes (A)
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Direct Current (DC): current constant in time
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Alternating current (AC): current that varies with time and reverses directions periodically
AC vs. DC
Fluid flow analog of voltage is pressure difference between two points
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Voltage
circuit
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Voltage between two points and in an electric circuit is the work done in moving charge
from to divided by the charge
1 Volt
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Voltage is measured in volts (V)
Voltage
Circuit Concepts and Diagrams Page 2
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
Electricity: naturally occurring phenomena resulting from the presence and flow of electric charge. Charge is a property of subatomic particles: proton & electron. Proton: subatomic particle with charge equal to +1 of elementary charge. Electron: subatomic particle with charge equal to -1 of elementary charge. Electric current is time rate of flow of electrical charge: : charge that flows through a cross section over time. Alternating current (ac): current that varies with time and reverses directions periodically. Fluid flow analog of voltage is pressure difference between two points. Voltage/electrical pote(cid:374)tial differe(cid:374)ce: electrical (cid:862)drivi(cid:374)g force(cid:863) that drives charge through a circuit. Voltage between two points and in an electric circuit is the work done in moving charge from to divided by the charge. Voltages are assigned polarities that indicate the direction of energy flow. If positive charge moves from positive polarity through the element towards negative polarity, the element absorbs energy.
