Electrical Circuits Day 2

Electrical Circuits Day 2

Vocab

​Series Circuit

An electrical circuit that is arranged in a single path.

The componenet of a circuit that uses electrical power.

​Load

A component that can complete and break a circuit.

Switch

Vocab

Vocab

Electric current: The flow of charged particles.

Electrical circuit: a path that an electric current can flow around.

Battery: A device that converts chemical energy into electrical energy

In today's lesson we will:

Build simple ciruits.
Draw and interpret circuit diagrams.

What are three items required for an electric circuit?

1. Power source

2. Conductive material (wire)

3. Load

​Video:
Powering circuits with Batteries

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As you watch the video, note that the way the batteries were arranged in the circuit in the video changed how they affected the load. In this case, the load was a light bulb.

• When the batteries were arranged end to end, they caused the light to be brighter. However, the batteries ran out of power in a short amount of time.

• When the batteries were arranged next to each other, the light was less bright. However, the batteries provided power for a longer time.

Multiple Choice

Examine the way the batteries are arranged in the flashlight in the diagram below. Which statement best explains how the batteries will perform in the flashlight?

• Dim light for a short time

• Bright light for a long time

• Bright light for a short time

• Dim light for a long time

Parellel circuits have multiple paths for the electricity to flow.

​Parellel circuit

An electrical circuit in which every component is connected in a single path.

​Series circuit

There are two main types of circuits.

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Consider the switch in the diagram to the right.

• When the switch is on, it connects the circuit. Electricity flows around the circuit, and the loads, or light bulbs, will turn on.

• When the switch is off, the circuit breaks. Electricity can no longer flow around the circuit, so the light bulbs turn off.

A switch physically connects and disconnects the conductive material within a circuit.

Multiple Choice

In the circuit shown below, the copper bar to the rear of the circuit is a switch. What will happen if Jeffrey raises the bar so it no longer touches the connector on the right?

• The bulbs will produce more light

• The right light bulb will turn off, buth the left bulb will stay lit

• Both bulbs will stop producing light

• The bulbs will dim slowly over time