# Tag - electric circuits

## Lab #35.3 Electric Circuits: Be The Battery

Purpose

In this activity, students will provide energy to an electric circuit using their own muscle power.

Discussion
Batteries last longer in some circuits than they do in others. They last longer when they don’t have to “work” so hard. In this activity, you will do the work of the battery. That is, you will power a circuit using the hand-held generator. You will learn which circuits are easier to power and which circuits are harder to power. And you’ll gain a better appreciation for what batteries and the local power utility do for you all the time!

Required Equipment

Hand-held generator (Genecon or equivalent), 3 miniature bulbs (6-volt flashlight bulbs), 3 miniature bulb sockets, 6 connecting wires

## Genecon Hand Crank Generator

In Stock SKU: P6-2631
\$41.00

## Deluxe Hand Crank Generator

In Stock SKU: P6-2560
\$36.00

## Economy Hand Crank Generator

In Stock SKU: P6-2550
\$19.95

## Red Hook-up Wire 100ft/spool, 22 ga.

In Stock SKU: P6-1402
\$6.00

## Black Hook-up Wire 100ft/spool, 22 ga.

In Stock SKU: P6-1403
\$6.00

## 3.2V Miniature Bulbs 10 Pack

In Stock SKU: P6-1407
\$5.50

## Miniature Bulb Base

In Stock SKU: P6-1401
\$1.50

## Dual Ammeter/Voltmeter

In Stock SKU: P6-8020
\$23.00

## Lab #35.2 Electric Circuits: An Open & Short Case

Purpose
In this activity, students will explore open circuits and short circuits.

Discussion
Electrical circuits are all around us. (We often appreciate them most when the power goes out.) Most circuits work perfectly well (when power is available). But electrical circuits can fail. Two common modes of circuit failure are open circuits and short circuits. In this activity, we will learn how these circuit failures are similar and how they are different.

We will be using an ammeter to help us with this investigation. An ammeter is a simple device used to measure electric current—the rate at which charge flows through a circuit. Current is measured in amperes (“amps”).

Required Equipment

2 D-cell batteries, 5 connecting wires, 2 miniature bulbs (1.5-volt or 2.5-volt flashlight bulbs), 2 miniature bulb sockets, DC ammeter (0–5A)

## C Battery

In Stock SKU: 44-1091
\$1.50

In Stock SKU: P4-3002
\$21.00

In Stock SKU: P4-3003
\$21.00

## 3.2V Miniature Bulbs 10 Pack

In Stock SKU: P6-1407
\$5.50

## Miniature Bulb Base

In Stock SKU: P6-1401
\$1.50

## Dual Ammeter/Voltmeter

In Stock SKU: P6-8020
\$23.00