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Electrical Safety (Final Exam) Questions And Answers With Verified Solutions Already Passed!!!
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Electrical Safety (Final Exam) Questions And Answers With Verified Solutions Already Passed!!!
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Electrical Safety (Final Exam) QuestionsAnd Answers With Verified Solutions
Already Passed!!!
Electricity is the flow of ______ - ANSWER✔✔Electrons
Any substance that PERMITS the flow of electrons, or current -
ANSWER✔✔Conductor
Any substance that PREVENTS the flow of electrons, or current -
ANSWER✔✔Insulator
A circuit exists when charge, or current, is able to flow around a _____ path -
ANSWER✔✔closed
What are the 2 types of circuits? - ANSWER✔✔Direct Current, aka DC,
Alternating Current, aka AC
2 types of DC circuits - ANSWER✔✔Series,
Parallel
Direct current = - ANSWER✔✔One way flow
In AC, electron flow or current, _____ directions at regular intervals -
ANSWER✔✔switches
Interval for 60 Hz wall AC current - ANSWER✔✔120 times per second
Ohm's law - ANSWER✔✔Voltage = Current (I) x Resistance
Example question: What resistance (R) across a 100 volt (V) source would produce
a current (I) of 100ma, or 0.1 amp? - ANSWER✔✔V=I x R,
100 volts = 0.1 amps x ?
100 volts/0.1 amps = 1000 ohms
1 ohm = - ANSWER✔✔1 volt/1 amp
, Ohm's law in fluids - ANSWER✔✔Pressure = Flow x Resistance
Example of Ohm's law in Fluids - ANSWER✔✔BP = CO x SVR,
Pressure = Flow x Resistance
A capacitor does what? - ANSWER✔✔Stores charge, or electrons
What does a capacitor consist of? - ANSWER✔✔Any two parallel conductors
separated by a one insulator
What undesirable type of capacitance is inherent in all electrical equipment? -
ANSWER✔✔Stray Capacitance, aka Capacitive Coupling
Capacitive coupling can transfer current to non-target tissue through intact
insulation, thereby causing what? - ANSWER✔✔stray electrosurgical burns
What type of surgical procedures is Capacitive Coupling common in and why? -
ANSWER✔✔Laparoscopic procedures due to close proximity of tissue, trocar,
and the active electrode with primary insulation
Capacitive Coupling occurs in the presence of a capacitor and is created when ___
conductors are separated by an insulator - ANSWER✔✔2
People become injured or death occurs when voltage pushes electrons through the
human body, particularly the _____ - ANSWER✔✔heart
Electrical shock can cause what 2 things to occur in the body? -
ANSWER✔✔Electrical burns,
Ventricular Fibrillation
Which current is more dangerous, AC or DC? - ANSWER✔✔AC at 60 Hz
In AC, high frequency current has low tissue penetration and does not excite
______ cells, but can still cause burns - ANSWER✔✔contractile
To get shocked, you must be connected to what 2 parts of an electrical circuit? -
ANSWER✔✔High-voltage source & the ground, or a grounded object
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