1. Fick's Law
   Ohm's Law
2. Hopkinson's Law
   Harp's Law

Ohm's Law was named for George Ohm, who studied electrical resistance way back in the years 1825. Even though it seems like one of the most basic tenets of the study of electricity today, critics really hated Ohm for suggesting it back in the day. Go figure.

1. CO2 or a dry chemical extinguisher
   Water
2. CO or Nitrogen
   CFCs

You never want to use water to handle an electrical fire, as water conducts electricity too well and can cause more damage as well as putting people in the area in harm's way as well. The best option is a CO2 or dry chemical powder extinguisher.

1. Voltage
   Resistance
2. Current
   All of the above

A multimeter doesn't have that name for no reason - it measures multiple things. A multimeter is capable of measuring current, voltage and resistance. They're remarkably common items and can be picked up at a hardware store for just a few dollars.

1. Steel
   Aluminum
2. Silver
   Copper

Copper is far and away the most common material for wiring in North America. Other metals conduct electricity just as well, and some will do an even better job, but because of how resilient copper is, how well it conducts and the relative cost, it's the popular choice.

1. Ground
   Generator
2. Transformer
   Outlet

A transformer is a device that uses coiled wire to transfer electrical energy by way of a changing magnetic field. It transfers electric current from one circuit to another at a constant frequency while allowing the voltage to increase or decrease.

1. Electrical power
   Electrical potential
2. Electrical resistance
   Electrical charge

Ohm s a measure of electrical resistance. It was named for German physicist Georg Simon Ohm. The dictionary says it's a unit of electric resistance equal to the resistance of a circuit in which a potential difference of one volt produces a current of one ampere. Fun!

1. Prevents people from stealing your power.
   It's plug and play.
2. It prevents kids form jamming things into it.
   It shuts off in an emergency.

Tamper-resistant outlets should be installed according to according to the National Electric Code. They prevent children from inserting foreign objects like paperclips into the outlet and injuring themselves.

1. Raceway
   Fuse
2. Circuit
   Potential

A circuit is the path energy travels, like a full circle back where it came from. This is easily visualized with a battery hooked to a light bulb by wires. It creates a circle with wire from the positive end of the battery to the bulb back to the negative end of the battery.

1. Negative Electrical Charge
   New Electrical Charge
2. National Electrical Code
   National Electrical College

The National Electrical Code is what people refer to when they talk about any electrical system being up to "code." This is the set of rules and standards that apply to all electrical work.

1. Positive charge
   Neutral charge
2. Negative charge
   Ground

The large slot in an outlet is neutral while the smaller one is hot. the half oval on the bottom is the ground. Older outlets will likely not have a ground, but that makes them more prone to shorting out.

1. Stores an electrical charge
   Alters voltage
2. Generates electricity
   Dissipates electricity

A capacitor stores an electric charge, kind of like a battery in the sense that it will hold and transmit electrons along a circuit. A capacitor's ability to hold a charge is called its capacitance, and the unit to measure that capacitance is the farad.

1. Red
   Black
2. White
   Green

In an effort to make things easier and safer, wires are meant to be color coded and a ground wire should be green. Wiring a house with incorrect wire colors could prove incredibly dangerous for another electrician.

1. Current that flows slowly
   Current that flows in one direction only
2. Low voltage electricity
   Current in a closed circuit

Direct current is current that flows in one direction, like from a battery. When power first started to be used for lighting in homes, it was direct current. Alternating current proved to be a superior choice and eventually replaced it.

1. Wire
   Ground
2. Charged
   Conductor

Any substance that can transmit electricity is a conductor. This is obviously something like copper wire, but the reason we need to be cautious around electricity is that humans can also work as conductors.

1. An electrical generator
   A light bulb base
2. A kind of power plant
   A ground wire

A mogul base is a kind of large light bulb base. Because a larger base generally means more power, the bulb that fits with a mogul base is usually pretty big, like the sort of bulb you might find in an industrial setting.

1. Measure insulation resistance
   Run cable through a wall
2. Insulate outdoor cable
   Cut thick wires

A megger is another name for a megohmmeter, and it's used to measure insulation resistance. The resistance of insulation like cable jackets needs to be measured when things are installed and then as part of regular maintenance to make sure they are still working normally.

1. 0.5
   5
2. 50
   500

You would be able to detect 0.001 amps running through your body. 0.009 amps would shock you enough that you would pull away. At 0.5 amps, you run the risk of heart failure and if you get up to 1.5 you can literally burn your organs.

1. A measure of electrical power
   A measure of electrical potential
2. A measure of electrical resistance
   A measure of electrical current

Watts are the unit of measurement used for electrical power. It's defined as a derived unit of 1 joule per second. It's named for Scottish inventor James Watt. During your average workday, you sustain an output of about 75 watts.

1. Amperes
   Volts
2. Milliliters
   Ohms

Electrical current is measured in amperes. The ampere is usually abbreviated into "amps" and is named for Andre-Marie Ampere. It's proportional to the number of electrons flowing through a conductor past a given point in one second.

1. Current
   Power
2. Voltage
   Resistance

Current is the flow of electrical charge. In practical terms, this is the flow of electrons moving through something like the copper wires in your wall. In a nutshell, that's what electricity in your house is, just a bunch of electrons in wires.

1. 350 kWh
   550 kWh
2. 1000 kWh
   2100 kWh

A modern refrigerator uses about 350 kWh per year, as an energy-efficient appliance. In the early '80s, a fridge might have used around 1400 kWh a year. Neither of those figures includes an ice maker, mind you.

1. Bubble Cover
   Flat Cover
2. Ohm Plate
   Full Cover

A bubble cover is an ideal cover for an outside outlet. Flat covers can protect an outlet but only when it's not in use. A bubble cover is able to close even when something is plugged in.

1. Geothermal
   Wind
2. Solar
   Hydroelectric

Solar power is remarkably cost-effective for both businesses and individual homeowners. A solar system will pay for itself. on average, after about 8 years. Many cities also offer rebates and incentives to switch to solar, further increasing the value.

1. Stops an electrical arc from jumping
   Fuses wires
2. Equalizes the voltage potential between conductive systems
   Prevents a current from building in an appliance

Bonding is sometimes confused with grounding, but it serves a different purpose. Bonding equalizes the voltage potential between conductive systems. This can stop you from being the path a current takes between systems, and can also prevent lightning strikes from causing fires.

1. Copper
   Tin
2. Silver
   Aluminum

Tin or a tin alloy is often used inside household fuses as opposed to copper for a very specific reason - tin has a lower melting point than copper and the wiring in the fuses is meant to melt if it overheats, thus safely breaking the circuit

1. SJ
   SOOW
2. S
   SO

SOOW cord or wire is heavy-duty, rubber-insulated that is oil-resistant as well as weather, water, and sunlight (UV) resistant. It's also one of the most popular choices for wiring in the world.

1. Lighting
   One switch
2. Two outlets
   One outlet

If a hallway is at least 10 feet long then the plans for the construction of that hallway need to accommodate at least one outlet. That's, of course, a modern code so older homes may not follow along.

1. AC and DC Current
   AC Only
2. DC Only
   None of the Above

A wattmeter measures current in alternating current (AC) and also direct current (DC). It measures the total power across a circuit. As you might expect based on the name, it measures the power in watts.

1. 1/4
   1/5
2. 1/10
   1/20

About 1/5 of the power in the US is generated in nuclear power plants. Nuclear fuel undergoes a fission reaction, which in turn heats water. The heated water generates steam and that steam moves turbines to create electricity.

1. 50%
   37%
2. 10%
   61%

A mere 10% of the energy that flows through a traditional light bulb actually produces any light. The other 90% becomes heat that the bulbs give off. That's why newer, energy-efficient bulbs are a much better option.

1. Bedroom outlet
   Kitchen outlet
2. Outdoor outlet
   Bathroom outlet

A bedroom outlet needs to be protected by an arc-fault circuit interrupter that breaks the circuit when it detects an electrical arc. It's required in bedroom outlets as a life-saving measure to prevent deadly bedroom fires.

1. A gigawatt
   A volt
2. An amp
   A joule

Alessandro Volta is the namesake for the volt, which is a unit of electrical potential or energy capacity. It's used as a measurement for residential and commercial electrical systems.

1. Electric charge
   Capacitance
2. Resistance
   Force

A coulomb is a measurement for electric charge. It's equal to the amount of electricity conveyed in one second by a current of one ampere. It was named for Charles-Augustin de Coulomb, who also got a law named for himself. Good job, Charles!

1. Shocks are less powerful.
   Shocks don't cause permanent damage.
2. Electrocution is always fatal.
   Electrocution is when electricity is used to execute someone.

Electrocution is a portmanteau word that originally meant "electrical execution." It was literally meant to refer only to people executed by electricity. In time it just came to mean any kind of electric shock.

1. 4 feet
   5 feet
2. 5.5 feet
   6.5 feet

At 5.5 feet and above, an outlet is not required to be tamper-proof. Since a tamper-proof outlet is a safety precaution for children, at that height it's safe to assume most children won't accidentally come into contact with it.