Electricity and electronic study guide

Name the fundemental components that make up an atom

Nucleus, protons, and electrons

What is considered the smallest particle of an element?

molecule

Electrical charges on an aircraft caused by accumulation result from what?

Static electricity

How is EMF defined?

pressure that force electrons to flow through a conductor

In which direction does current truly flow in a circuit?

negative to positive

Explain what “current” means in electrical terms

Flow of electrons through a conductor

What term represents one-thousandth of an ampere?

millianpere

What safety measure should you follow when handling aircraft electrical parts?

Shouldn’t pry on stuff and keep heat to a minimum

What factors can weaken or destroy a magnet?

heat

Describe what happens to the magnetic field amount a conductor when current flows through it?

It stops

If the current in an electromagnet is reversed, what else changes?

polarity

Which formula is used to calculate electrical power?

P= ExI

According to Ohm’s law, current equals to what?

I=E/R

In a series circuit, how is the total current determined?

it stays the same

What is the role of a capacitor in an electrical circuit?

Resevoir

If a resistor has only three color bands, what is its tolerance?

assume 20%

Which type of meter operates using its own power source?

ohmmeter

What device is used to step down 110 volts AC to 12 volts AC for aircraft use?

Transformer

What forms Kirchhoff’s voltage law state about voltage drops in a series circuit?

Add up the amount equal to the source voltage

What forms when multiple positions are combined in a logic circuit?

Logic function

What is the most effective method for testing lead-acid batteries?

hydrometer

When measuring amperage, how should the ammeter or multimeter be connected?

inseries

Approximately how many volts does a 12 cell lead acid battery produce?

24

In a series AC circuit with 12 ohms of resistance and 100 volts, what is the current?

100/12= 8.33

Is electromagnetism caused by copper’s magnetic properties?

No

Is the effect of alternating current expressed as RMS?

No

Is a secondary cell battery rechargable?

Yes

Aircraft electrical troubleshooting often involves identifying what type of circuit fault?

short circuit

Does the number of cells in a series determine a battery’s voltage?

Yes

Is a transistor a two-terminal device used to amplify signals and control current?

No

Can current be described as another term for EMF?

No