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ANPR 555 - Sames - math and physics > Week 5- Electricity Etc > Flashcards

Week 5- Electricity Etc Flashcards

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0
Q

Coulomb’s law states that like charges __ each other

A

Repel

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1
Q

1 coulomb = ___ electrons

A

1.6022210^19

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2
Q

A volt is like the “__” or gradient of charges that could potentially flow

A

Pressure

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3
Q

Electrical current is the __ of flow through a conductor

A

Rate

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4
Q

Current (capital I) is measured in __

A

Amperes

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5
Q

An ampere is the flow of 1 __ per second

A

Coulomb

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6
Q

Ohm’s law measures __ to electrical flow

A

Resistance

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7
Q

Voltage = current in amps x resistance in ohms

A

V= I x R

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8
Q

1 hz equals __ cycle per second

A

1

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9
Q

In AC circuits, resistance is called __ and is the total of all forces that impede electrical flow.

A

Impedance

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10
Q

Macroshock vs microshock

A

Macroshock = large current = harm/death, 100-2500 milli amps

Microshock = electrically susceptible patient = external conduit in direct contact with heart = may cause vfib, min. of 50 micro amps

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11
Q

There are two types of grounding, power and equipment. They are not mutually __

A

Exclusive

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12
Q

Utility companies provide __ power to homes

A

Grounded

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13
Q

What is the third wire for?

A

Low resistance pathway through which current can flow to ground

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14
Q

Can you still get a shock from grounded equipment and grounded wires?

A

Yes, but the wire has less resistance so only part of the current will pass through the person

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15
Q

The power supplied to OR is __ by using an isolation transformer, and protects from __shock

A

Ungrounded

Macroshock

16
Q

What are the only two things grounded in the OR according to Baresh’s newest material?

Note- the primary power supply is grounded but the secondary side of the transformer is ungrounded.

A

The patient

The floor

17
Q

Is the electrical equipment in the OR grounded or isolated? How is it monitored?

A

Isolated by isolation transformers

Monitored by line isolation transformer

18
Q

The line isolation monitor meters the amount of __ plugged into the isolated power system

A

Leakage

19
Q

If a line isolation monitor reads between 2-5 mA it most likely means__

A

Too much equipment plugged in

20
Q

If the line isolation monitor reads >5 mA it is likely a __

A

Faulty piece of equipment

21
Q

Can the line isolation monitor protect from microshock?

A

No

ANPR 555 - Sames - math and physics (12 decks)

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