Module 6 Electricity Study Guide

​5.6B

Circuits and Electricity 

Electricity is a form of energy-The ability to do work.

How does electricity travel? ​

ELECTRIC CIRCUITS

An electrical appliance is made up of different components. These components are connected to form an electric circuit.

​

A simple electric circuit is made up of four components.

• Energy source

• Wires

• Output device

• Switch

Electric Circuit​

​Output Device : An output device is an electrical appliance that uses electricity to work. There are many different types of output devices, such as buzzers, small electric fans, and light bulbs.

​Electrical components

​Switch : A switch controls the flow of the electric current in a circuit.

The switch needs to be closed in order for the electric current to flow in the circuit.

There are different types of switches.

​Energy Source : The battery is an energy source.

A battery has two terminals – positive (+ve) and negative (-ve). There are chemicals inside the battery that react to produce an electric current when the positive and negative terminals are connected.

​Wires : Wires are electrical conductors. They are used to connect one component of the circuit to another for electric current to flow.

ELECTRICAL COMPONENT SYMBOLS

Electric Circuit​

CIRCUIT DIAGRAMS

Electric Circuit​

​It is easier for us to represent an electric circuit using a circuit diagram. Circuit diagrams help us understand how the components of an electric circuit are connected together.

Electric Circuit​

types OF ELECTRIC CIRCUIT

​A series circuit is a circuit that has components which are connected such that there is only one path for the electric current to flow through. Here are some examples of series circuits.

Some text here about the topic of discussion

​series

The adventages and disadvebtages

of series circuits

Electric Circuit​

​• Advantage :

We can add more energy source or batteries to the circuits to make the output of the appliance more powerful. In the case of the torch below, this means that bulb will light up brighter.

​

• Disadvantage :

The output of the appliance will drop if we connect more output devices together in the series. This means that if a series circuit has two bulbs, the bulbs will not light up as brightly as a series circuit with only one bulb. Also, if one bulb is blown, the other bulbs

will not light up.

​A parallel circuit is a circuit that has parts which are connected such that there are more than one path for the electric current to flow through. Here are some examples of parallel circuits.

Electric Circuit​

PARALLEL

The adventages and disadvebtages

of parallel circuits

• Advantage :

Even if the bulb is blown, the other bulbs will still work. This is because in a parallel circuit, the electric current has more than one path to flow through. If one output device is broken, then no electric current will flow through that path. As the other paths are not affected, electric current can still flow through them.

​

• Disadvantage :

That we cannot make the bulbs light up brighter by connecting more energy sources in parallel  connection.

Electric Circuit​

​https://youtu.be/kc9Vvb02I0k

How to make the circuits?

Open the link below :​

​

​Circuit Symbols

​conductor

Multiple Choice

Resistance in a circuit is equal to voltage divided by ____________.

• joules

• current

• power

• watts

• time

Multiple Choice

A potential difference of 24 V is applied to a 150 resistor. How much current flows through the resistor?

• 0.15 A

• 3600 A

• 6.25 A

• 0.16 A

Multiple Choice

This is an example of a _______ circuit

• open

• series

• parallel

• square

Multiple Choice

What is the current in a circuit with 6.0 Ω of resistance and a battery providing 24 V?

• 1/4 A

• 144 A

• 4 A

• 0.4 A

Multiple Choice

Look at the circuits in the diagram. In which circuit will the bulb be brighter?

• Circuit A

• Circuit B

• Both circuits, the bulbs will have the same brightness.

Multiple Choice

A 200-W light bulb is connected across a 100-V dc power supply. What current will flow through this bulb?

• 0.90 A

• 0.36 A

• 0.60 A

• 2.0 A

Multiple Choice

What is the total current in this circuit?

• 30 A

• 60 A

• 2 A

• 0.5 A

Multiple Choice

What will happen if one light bulb is removed from this circuit?

• The other bulbs will go out.
• The other bulbs will stay on
• The other bulbs will get dimmer.
• The battery will become stronger.

Multiple Choice

What type of circuit is used in your house?

• Tandem Circuits

• Four-Phase Circuits

• Series Circuits

• Parallel Circuits

Multiple Select

Select the things that the factor are increasing while you increase the resistance

• length

• cross-sectional area

• temperature

• circuits

Multiple Choice

What is that

• conductor

• open switch

• voltmeter

• fuse

• close switch

Multiple Choice

What is that

• resistor

• conductor

• voltmeter

• battery

• close switch

Multiple Choice

What is that

• resistor

• battery

• conductor

• battery

• a switch

Multiple Choice

Ampere is a unit of current

• TRUE

• FALSE

DONT FORGET

Multiple Choice

The current through the starter motor of a car is 210A. If the battery maintains 12V across the motor, how much electrical energy is delived to the starter in 10.0s?

• 2500

• 25200

• 17.5

• 175

Multiple Choice

A large resistance concentrated into a small volume is necessary

• TRUE

• FALSE

Multiple Choice

There are two ways to decrease the current .. the voltage can reduced, or the resistance can increased

• TRUE

• FALSE

Multiple Choice

Batteries and power plants are examples of ______________. 

• energy sources
• energy conduction
• energy transformation

Multiple Choice

______________ are materials such as rubber that do not allow charges to flow.

• conductors
• circuits
• insulators
• amps

Multiple Choice

A complete, unbroken path that charges can flow through is called an __________________.

• conductor
• electric circuit
• electric current
• insulator

Multiple Choice

The unit for the rate of current is the ______________.

• ampere
• volt
• ohm
• joule

Multiple Choice

All electrical devices contain electric ________________.

• acid
• gears
• circuits
• motors

Multiple Choice

Metals such as copper and aluminum are good ______________. 

• insulators
• conductors
• circuits
• charges

Multiple Choice

Circuits often include a _____________ to control the flow of current.

• switch
• conductor
• voltage
• current

Multiple Choice

The path of current in a circuit is always completed by _________________.

• a transformer
• an electrical device
• conducting wires

Multiple Choice

__________________ is the continuous flow of electric charges through a material.

• Electric current
• Resistance
• Voltage
• Static Discharge

Multiple Choice

What makes up an electric circuit?

• Bulb and battery

• Bulb, battery and switch

• Bulb, battery and wire

Multiple Choice

Why is a battery important in an electrical circuit?

• As a source of energy.

• As a path for electricity to flow through.

• As a connector to connect all parts of a circuit.

Multiple Choice

Why must parts of a circuit be properly connected before the bulb can light up?

• To ensure that the bulb can light up.

• To ensure that the battery can produce light in a closed circuit.

• To ensure that electric current can flow through the closed circuit.

Multiple Choice

Look at the diagram. Why did the bulb not light up?

• The bulb was fused.

• The battery had not enough electric current to light up the bulb.

• The switch was opened and prevented electric current from flowing through the circuit.

Multiple Choice

The diagram shows a complete circuit but the bulb did not light up. Why?

• The plastic spoon is an insulator of electricity and prevented electric current from flowing through the circuit.

• The plastic spoon is not connected properly and prevented electric current from flowing through the circuit.

• The plastic spoon is a conductor of electricity and prevented electric current from flowing through the circuit.

Multiple Choice

Look at the circuits in the diagram. In which circuit will the bulb be brighter?

• Circuit A

• Circuit B

• Both circuits, the bulbs will have the same brightness.

Multiple Choice

Why electrical wiring usually are covered with a layer of plastic?

• To make it look pretty

• To help electricity flow along the wire

• To make it safe

• To add more energy

Multiple Choice

What is a switch's function in a circuit?

• to make the current hotter or colder
• turn on and off the flow of current
• the pathway that current flows
• to add more power to the circuit

Multiple Choice

What are the two ends of a battery called?

• south and north terminals

• positive and negative terminals

• End to end terminals

Multiple Choice

A device for making or breaking an electric circuit.

• Cell

• Filament

• Electric switch

Multiple Choice

Find the odd one

• Silver

• Copper

• Bakelite

Multiple Choice

The direction of current flow is taken from

• negative to positive terminal

• Positive to negative terminal

• Both

Multiple Choice

The complete path through which an electric current is flowing is called

• Open circuit

• Closed circuit

• Both

Multiple Choice

Thin metal wire inside the electric bulb

• Fiber

• Terminal

• Filament

Multiple Choice

Which type of energy is stored in a battery?

• chemical energy

• kinetic energy

• light energy

Multiple Choice

How many terminals do each cell have?

• 3

• 4

• 2

Multiple Choice

Electrical energy is converted to _______ energy in a hair dryer.

• heat 
• light

Multiple Choice

To have a complete electric circuit, the path must be _____

• small
• closed
• big
• open

Multiple Choice

Is this a working circuit?

• Yes

• No

• I'm not sure, I would need to test it myself.

Multiple Choice

Will the light bulbs light up in this image?

• Yes, both of them will

• Yes, but only the one on the right

• No, neither of them will

• Yes, but only the one on the left

Multiple Choice

Why is electrical wiring usually made from copper?

• Because copper is shiny

• Because copper conducts electricity

• Because copper is not magnetic

• Because copper insulate electricity

Multiple Choice

If the electric circuit is OPEN, the switch is ____.

• ON
• OFF

Multiple Choice

If the electric circuit is CLOSED, the switch is _______. 

• ON
• OFF

Multiple Choice

What is a circuit?

• A constant flow of electricity 
• A path that a current can flow along

Multiple Choice

An object through which electrons can easily flow is called a(n) ___________.

• Conductor
• Insulator

Multiple Choice

A flash of lightning is an example of an electric _____

• watt
• voltage
• current
• resistance