﻿ Electric Circuits Worksheets
This selection of worksheets explores all aspects of electric circuits.

#### The path that electricity travels in a never-ending loop is called an electric circuit. An electric circuit is very similar to the circulatory system of the human body. Just how blood continually flows around the body and coming back to where it originated, the electrons do the same thing in a circuit. Any circuit has four common components that make this possible. Conductors are the wire or metallic based substances that the electricity flows through. There is a small gap embedded in the conductor where you can close or open (turn on/off) the flow of electricity. The load is the object in the circuit that consumes the electric power, in most cases a light or electronic component. The power source that is making the follow of these electrons possible is called the cell which is often a battery.

These worksheets will help students examine electric circuits and how the materials they consist of effect the efficiency and flow of electrons within it. Students will explore the concept of conductors, resistors, and insulators. We will learn how you can determine the potential of a material based on the physical properties of what it is made up of. We will finish off by looking at how magnetism and electricity relate.

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## What Are They?

The purpose of a schematic is to show how all the different components of an electric circuit connect together.

## QUESTIONS: What Are They?

The different electronic components in a circuit are connected using a printed circuit board.

## Electricity Explained

All matter is made up of atoms, which means that all matter contains electrons. The electricity that we harness and use every day comes from tapping into this source of subatomic energy.

## QUESTIONS: Electricity Explained

Humans cause electricity to flow by creating an electric circuit. An electric circuit is basically a path along which electricity can be started and stopped.

## Electric Current

Current means the flow of electric charge. A current flows through an electric circuit when a power source is connected to it.

## Question Set: Electric Current

Electric current is used to create electromagnets, the technology that powers the motors in electric cars.

## Ohm's Law

. The formula describes how a current moves through a resistance when there are different voltages present at each end of the resistance.

## Question Set: Ohm's Law

Conversely, the Law says that a current is inversely proportional to resistance: I = V/R. If you know either of these two variables (I, V, *or R) you can calculate the other using Ohm's Law.

## Basic Elements

The function of a resistor is to control the flow of current to other components in the circuit. Resistors are needed because too much electricity can destroy the object it is trying to power.

## Question Set: Basic Elements

The function of a capacitor is to store energy in an electric circuit. It blocks direct current (DC) and allows alternating current (AC) to pass.

## Resistors

Resistors have two ports and are connected to the circuit’s wire in each end so that the current flows through it.

## Questions: Resistors

In a series configuration, resisters are connected end-to-end in the circuit. In a parallel configuration, resisters are connected across from each other in an electric circuit.

## Conductors and Insulators

Conductors allow a freer flow of electricity because the electrons in the outer shells of the atoms making up that material are loosely bound, so they are freely able to move through the material in the presence of an electric charge.

## Conductors and Insulators Question Series

An insulator is the opposite of a conductor. An insulator works against the flow of electricity. Insulators are used to protect us from electrocution when handling equipment that requires electricity in order to operate, like computers and televisions.

## Boolean Math

Doing math using only the digits 1 and 0 is called Boolean math or Boolean logic.

## Question Set: Boolean Math

An electronic chip is a collection of electronic gates in a small area. An electronic chip can have millions of gates which together are capable of performing complex operations.

## Types of Electric Circuits

A close (or closed) circuit is when current flows around a complete electrical connection from one end to the other. A circuit is considered open when there is a faulty wire or component in the circuit or if the circuit is switched off.

## Types of Electric Circuits Questions

A short circuit is the opposite of an open circuit. Where an open circuit has unlimited resistance, a short circuit lets a current travel without or with very little resistance, so that excessive current flows through the circuit.

## Magnetism and Electricity

The coil of wire used to create an electromagnet is called a solenoid. The diameter of a solenoid is much smaller than its length.

## Magnetism and Electricity Questions

When magnetism and electricity interact, it is called electromagnetism. A magnetic field can be created by the flow of electricity.