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PMR Exam 1 Questions And 100% Correct Answers

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PMR Exam 1 Questions And 100% Correct AnswersFlow of electrons along a conduction medium What is amperage? Force that is pushing electrons through an object What is voltage? Opposite charges are separate Like charges are bought together What can create voltage? Polarity What is the term tha...

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  • November 14, 2024
  • 30
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • PMR
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PMR Exam 1 Questions And 100% Correct Answers


Flow of electrons along a conduction medium

What is amperage?



Force that is pushing electrons through an object

What is voltage?



Opposite charges are separate



Like charges are bought together

What can create voltage?



Polarity

What is the term that is used to indicate the relative charge of terminals or leads of a
circuit?



Negative electrode (black)



**A Cation is positive, but a cathode is negative - A cathode attracts cations**

What type of charge is a cathode?



Positive electrode (red)



**A Anion is negative, but an anode is positive - An anode attracts anions**

What type of charge is an anode?

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Resistance - The opposition to the flow of a direct types of current



Impedance - The opposition to the flow of alternating types of current

What is the difference between resistance and impedance?



Impedance

What is the opposition to the flow of alternating types of current?



Resistance

What is the opposition to the flow of direct types of current?



Ohms

What is the measurement of resistance or impedance?



The current in a circuit is directly proportional to the applied voltage and inversely
proportional to the circuit resistance.



Current flow = Voltage/Resistance

I = V/R

What is ohms law?



Muscles

Peripheral nerves

Blood

What tissues in the body are considered conductors?

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Skin

Skin oil

Fat

Hair

What tissues in the body are considered insulators?



Decrease resistance

If you increase temperature of a circuit, will it increase or decrease the resistance?



Decrease resistance

If you increase the cross section of a circuit, will it increase or decrease the resistance?



Increase resistance

If you increase the length of a circuit, will it increase or decrease the resistance?



Phase

What is the term for the electrical event when current departs isoelectric baseline and
then returns?



Monophasic - Direct current



Biphasic - Alternating current

What is monophasic vs biphasic?



Electrical charges are equal above and below the baseline where there is zero net
charge. A balanced waveform doesn't have to be symmetrical.

What is a balanced waveform?

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