Electromagnetism

Application of Electromagnets in Our Life

Before we start, let's play a fun game

Multiple Choice

Who is this

• Jason Voorhees

• Michael Myers

• Freddy Krueger

• Hannibal Lecter

Multiple Choice

Who is this

• Chucky

• Annebelle

• Pinhead

• Pennywise

Multiple Choice

Who is this

• Frankenstein

• Ghostface

• Norman Bates

• Leatherface

Multiple Choice

Who is this

• Jack Torrance

• Chucky

• Dracula

• Laurie Strode

Multiple Choice

Who is this

• Regan McNeil

• Alien

• Boogeyman

• Samara

Multiple Choice

Who is this

• Carrie White

• Jigsaw

• Ellen Ripley

• Ghoul

Multiple Choice

Who is this

• Victor Frankenstein

• Buffalo Bill

• Tall Man

• Pamela Voorhees

Multiple Choice

Who is this

• Jason Voorhees

• Michael Myers

• Chucky

• Freddy Krueger

Multiple Choice

Who is this

• Pamela Voorhees

• Michael Myers

• Frankenstein

• Chucky

Multiple Choice

Who is this

• Chucky

• Annabelle

• Victor Frankenstein

• Dracula

Multiple Choice

What movie is this character from

• IT

• Halloween

• Child's Play

• The Conjuring

Multiple Choice

What movie is this character from

• The Witch

• The Nun

• A Quiet Place

• Hereditary

Multiple Choice

What movie is this character from

• Get Out

• Venom

• The Conjuring

• Suspiria

Multiple Choice

What movie is this character from

• Hush

• Train To Busan

• It follows

• Veronica

Multiple Choice

What movie is this character from

• The others

• 28 days later

• The descent

• The orphanage

Multiple Choice

What movie is this character from

• Nightmare on Elm Street

• Candyman

• Hellraiser

• The exorcist

Multiple Choice

What movie is this character from

• The Thing

• Alien

• Poltergeist

• The Evil Dead

Multiple Choice

What movie is this character from

• The Texas Chainsaw Massacure

• Jaws

• Carrie

• Psycho

Multiple Choice

What movie is this character from

• The Omen

• Night of the living Dead

• Rosemary's Baby

• Re-Animator

Multiple Choice

What movie is this character from

• Friday the Thirteenth

• Halloween

• Child's play

• Scream

Application of Electromagnets in Everyday Life

Introduction

Electromagnetic symptoms are often used by people in everyday life. Some applications of these electromagnets can be found in electric bells, electric switches, and wired telephones.

Electric Bell

When the electric bell button is pressed, the current circuit is closed and current flows in the coil.

The flow of electric current in this coil causes the iron in it to become an electromagnet which is able to move the bat arm to hit the bell so that it sounds.

https://www.youtube.com/watch?v=nygn7wB7658

Electric Bell

Let's make a simple electric bell from this video below:

https://www.youtube.com/watch?v=N3PKtyGBHSo

Quiz Time

Multiple Choice

What kind of magnet can be turned on and off? (Man-made magnet)

• refrigerator magnet

• electromagnet

• magnetite

• iron

Multiple Choice

If you wrap more coils around an electromagnet, it will become...(think about the Webquest.)

• brighter
• stronger
• weaker
• invisible

Multiple Choice

How do like poles interact with each other? (north to north)

• They repel each other.
• They attract each other.
• Throw a toaster into a bathtub.
• No relationship.

Multiple Choice

Choose the best option to complete this gap:
A magnetic field is the ________ around a magnet in which the magnetic force acts.

• pole
• electron
• area
• iron

Multiple Choice

Opposite poles _____ .

• attract
• push away
• are balanced
• transfer electrons

Multiple Choice

A material in which electrons are not able to move easily 

• Circuit 
• Insulator 
• Resistance 
• Conductor

Multiple Choice

An example of an insulator is:

• iron
• silver
• copper wire
• rubber

Multiple Choice

An example of a conductor is :

• a glass paperweight
• a plastic cap
• a metal screw
• a wooden handle

Multiple Choice

The relationship between electricity and magnetism is called

• solenoid

• transformer

• electromagnetism

• electromagnet

Multiple Choice

Particles with opposite charges ____________ and particles with same (or like) charges ____________.

• attract, repel

• repel, repel

• attract, attract

• repel, attract

Multiple Choice

What happens if you cut a magnet in half?

• Nothing

• The magnets repel

• There will be two magnets

Multiple Choice

The picture above is an example of what?

• Magnetic field

• Electric field

• Repulsion

• Attraction

Multiple Choice

What does the magnetic field look like on a straight wire?

Multiple Choice

A turbine is used to ________ the magnet in a generator.

• rotate
• electrify
• attract
• repel

Multiple Choice

Voltage can be induced in a wire by

• a. moving the wire near a magnet.
• b. moving a magnet near the wire.
• c. changing the current in a nearby wire.
• d. all of these

Multiple Choice

What would happen if I move a bar magnet in and out of a coil of copper wire?

• Electric current would disappear 
• The magnet would explode 
• Electric current will flow through the wire
• It would produce a gravitational field

Multiple Choice

A magnet can move in a coil of wire to produce electricity in which system?

• Generator
• Motor
• Magnet
• Transformer

Multiple Choice

What type of device is being shown?

• Electromagnet

• Electric motor

• Electric generator

• Electromagnetic Induction

Multiple Choice

What type of process is shown?

• Electromagnet

• Electric motor

• Electric generator

• Electromagnetic induction

Multiple Choice

What type of device is shown?

• Electromagnet

• Electric motor

• Electric generator

• Electromagnetic induction

That's it for today, Neo