Exam (elaborations)
CRAS-CT100-02. Lecture Questions with Solutions
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CRAS-CT100-02. Lecture
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CRAS-CT100-02. LectureElectricity - answer the flow of electrons through a conductor or the movement of
electrons jumping from atom to atom
Insulators - answer material made to block the flow of electrons
Voltage (E) - answer basic unit measure potential difference in charge between two
points
Current (I) - answerthe intensity of flow, better said the number of electrons moving
through the wire at any given time
Resistance (R) - answerthe opposition or resistance to the current flow
Impedance (Z) - answertotal opposition to AC Current flow when considering frequency
effect component
Power (P) - answerthe rate at which energy is converted or consumed in an electrical
circuit
DC (direct current) - answerflows in one direction (all electrons move in the same)
AC (alternating current) - answerdoes not continuously flow in one direction but
alternates
Standard US distribution - answer120 VAC, 60 Hz, 5 Ph
Ohm's Law - answerP/(I)x(E) and E/(I)x(R)
Open Switch - answerturn off, no current flow, or better said lacking connection
Short Circuit - answerIncorrect path, usually excessive current flow. Leads to smoke,
fire, or a blown circuit
Parallel Circuits - answerMore than one path for current flow. Total current is the sum of
the individual branch currents. Total resistance is always less than the lowest single
branch in the circuit.
Series Circuit - answerOne path for current to flow. Current is the same throughout a
series circuit.
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