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Stuff Every Electricity Scout Should Know: the Study Guide

Practice facts for the Electricity merit badge. Not an official Scouting America credential. Grab a snack: this guide is the friendly version, with the answers explained and a groan-worthy joke waiting at the end of most cards.

Knowing Electricity Scout saves you money, time and the occasional embarrassment.

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Chapter 1: Statics and Forces

What is electric current?

Short answer: The movement of electric charge

Current is charge in motion, usually electrons through a conductor.

Groan of the day: Current events are shocking.

Sources: Electricity

What is direct current (DC)?

Short answer: Current flowing in one direction

DC flows one way, like from a battery to a device.

Groan of the day: DC is one directionally determined.

Sources: Electricity

What is alternating current (AC)?

Short answer: Current that reverses direction repeatedly

AC reverses direction, usually as a sine wave, delivering energy both ways.

Groan of the day: AC really goes back and forth on things.

Sources: Electricity

What is an electric circuit?

Short answer: A closed path for electric charge to flow

A circuit is an interconnection of components forming a closed path for charge.

Groan of the day: That circuit is going in circles.

Sources: Electricity

What is an insulator?

Short answer: A material current will not flow through easily

Insulators resist current flow, unlike conductors.

Groan of the day: That insulator is not a good conductor of conversation.

Sources: Electricity

What is a conductor?

Short answer: A material that lets current flow easily

Conductors allow electric current to flow through them.

Groan of the day: That conductor is a real current events expert.

Sources: Electricity

What is static electricity?

Short answer: A charge imbalance, often from rubbing materials

Static electricity is a charge imbalance, usually from rubbing dissimilar materials.

Groan of the day: Static electricity is shocking, but not moving.

Sources: Electricity

What is electromagnetic induction?

Short answer: Making voltage by changing magnetic flux

Changing magnetic flux through a circuit induces a voltage, as Faraday found.

Groan of the day: That induction is very persuasive.

Sources: Electricity

What is Ohm's law?

Short answer: Current is proportional to voltage across a resistance

Ohm's law says current through a resistance is proportional to voltage across it.

Groan of the day: Ohm's law is a law-abiding citizen.

Sources: Electricity

What is overvoltage?

Short answer: A voltage higher than equipment is designed for

Overvoltage means voltage exceeds what equipment is designed to handle.

Groan of the day: That overvoltage is too much to handle.

Sources: Scouting America: Electricity

What does a wind turbine do?

Short answer: It converts wind energy into electricity

Wind turbines use wind to drive generators that produce electricity.

Groan of the day: That turbine is a big fan of wind.

Sources: Electricity

The cheat sheet

The whole guide on one screen. Screenshot it, print it, stick it on the fridge.

  • A breaker trips to stop overloaded current, protecting wires from overheating.
  • A fuse melts when current is too high, breaking the path and stopping flow.
  • Overloading means drawing too much current for the circuit's safe capacity.
  • Resistance is measured in ohms, named after Georg Ohm.
  • Voltage is electric potential difference between two points.
  • Current is charge in motion, usually electrons through a conductor.
  • DC flows one way, like from a battery to a device.
  • AC reverses direction, usually as a sine wave, delivering energy both ways.
  • A capacitor stores charge between two conducting plates separated by an insulator.
  • Resistance opposes current flow and dissipates energy as heat.
  • Power is measured in watts, one joule per second.
  • Utilities sell energy in kilowatt hours, power times time.

Pop quiz

Think of your answer first, then peek.

  1. What does a circuit breaker do when too much current flows?
    • It trips and opens the circuit
    • It makes the current stronger
    • It stores extra electricity
    Show the answer

    It trips and opens the circuit. A breaker trips to stop overloaded current, protecting wires from overheating.

  2. What is the unit of electric power?
    • The volt
    • The watt
    • The ohm
    Show the answer

    The watt. Power is measured in watts, one joule per second.

  3. What does a surge protector do?
    • It increases the voltage
    • It stores energy for later
    • It helps protect devices from voltage spikes
    Show the answer

    It helps protect devices from voltage spikes. Surge protection helps shield equipment from sudden voltage spikes.

  4. What did Faraday invent in 1821?
    • The electric motor
    • The telephone
    • The light bulb
    Show the answer

    The electric motor. Faraday invented the electric motor in 1821 using magnetism and current.

  5. What is a three-way switch used for?
    • Converting AC to DC
    • Controlling a light from two locations
    • Storing charge in a battery
    Show the answer

    Controlling a light from two locations. Three-way switches let you control a light from two different places.

Now make it stick

Read a chapter, then play the deck and see how much stuck.

This guide covers the 50 free cards. The other 8 are in the game for members.

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