2 Electricity – Part D “Electrical Charge – Static”

Aims…

2.22P identify common materials which are electrical conductors or insulators, including metals and plastics

2.23P practical: investigate how insulating materials can be charged by friction

2.24P explain that positive and negative electrostatic charges are produced on materials by the loss and gain of electrons

2.25P know that there are forces of attraction between unlike charges and forces of repulsion between like charges

2.26P explain electrostatic phenomena in terms of the movement of electrons

2.27P explain the potential dangers of electrostatic charges, e.g. when fuelling aircraft and tankers

2.28P explain some uses of electrostatic charges, e.g. in photocopiers and inkjet printers.

Resources….

• Use this PowerPoint for a quick review…2 Electricity D Electrical Charge
• Smoke Precipitator Worksheet Version 2
• Static Exam Questions
• Electricity – Charge – Notes
• Lesson 2 Static Exam Question

Video Clips…

What is Electric Charge and How Electricity Works | Electronics Basics #1

In this tutorial we will learn what electric charge and current is and how electricity works.

Find more on my website! ► https://howtomechatronics.com/learn/electricity/electric-charge-how-electricity-works/

Visit HowToMechatronics.com for more Tutorials, Tips, Projects and How It Works videos:
► http://howtomechatronics.com/

Like my page on Facebook:
► https://www.facebook.com/howtomechatronics

Add me on Google+:
►https://plus.google.com/+Howtomechatronics

Music: MÆSON - The Catch (https://soundcloud.com/maeson-1/tracks)Show More

active

What is Electric Charge and How Electricity Works | Electronics Basics #1

In this tutorial we will learn what electric charge and current is and how [...]

In this tutorial we will learn what electric charge and current is and how electricity works.

Find more on my website! ► https://howtomechatronics.com/learn/electricity/electric-charge-how-electricity-works/

Visit HowToMechatronics.com for more Tutorials, Tips, Projects and How It Works videos:
► http://howtomechatronics.com/

Like my page on Facebook:
► https://www.facebook.com/howtomechatronics

Add me on Google+:
►https://plus.google.com/+Howtomechatronics

Music: MÆSON - The Catch (https://soundcloud.com/maeson-1/tracks)Show More

active

Electroscope Static Dangers

This video shows how semolina falls down a long plastic tube. As it does so [...]

This video shows how semolina falls down a long plastic tube. As it does so it acquires a static charge via friction. As the semolina grains fall into a copper can an electroscope is charged by the accumulation of semolina and charged grains. When you touch the can the charge leaks away. This clearly shows why we need a static wire to release charge in certain circumstances.Show More

active

Electrostatic effects on water

Use a charged insulating rod to attract or repel water which is a strongly [...]

Use a charged insulating rod to attract or repel water which is a strongly polar molecule.

active

Plasma Ball and Static causing excitation of a low

active

Shuttling Electric Charge

This simple demo shows how charges are built up on a metallic plate. Then [...]

This simple demo shows how charges are built up on a metallic plate. Then an uncharged ball which is coated in graphite (conductor) picks up charges to become the same charge as the plate. Then the ball is repelled and moves towards a grounded plate offloading the charge. The pattern is repeated forming an electric current.

The Physics is simple....

1/T = f for the ball
Q = It

so you can sub in t for T in this case and in fact work out the charge flowed to the device and the number of electrons that has flowed. However you will need a nA to accomplish this in practice.

This version shows me tapping off charge with a light bulb and also right at the end you can see when the ball is moving very fast it actually has small sparks!


https://tap.iop.org/electricity/current/102/page_45896.htmlShow More

active

Tesla Coil at Nottingham University Physics Dept Colonel Frank Seely Visit

This video was recorded when Colonel Frank Seely visited Nottingham [...]

This video was recorded when Colonel Frank Seely visited Nottingham University and the students had a fantastic day seeing all manner or cool and interesting phenomena.

In this case it was a Tesla coil producing electrical discharge which actually creates the musical sound (output as voltage from a laptop PC) as well (just like thunder). You simply alternate voltage across a primary coil (like a transformer) and capacitor (something to store electrical charge) setup at the base of the machine, this creates another alternating voltage in the stem on a secondary coil (stepped up p.d) with more capacitance. The two circuits have to have a similar resonant frequency (quite complex A-Level Physics equation) f = 1/ pi*(LC)^0.5 where C = Capacitance (a store of energy) L = inductance (the ratio of the voltage to the rate of change of current). In essence we step up the P.D. transfer the charge to the toroid (donut shape on top) and then let it leak away.

This is a good, but complex site to explain it all... http://www.hvtesla.com/Show More

active

Coin & Styrofoam ball electrostatic indicator (동전과 스티로폼공을 이용한 정전기 감지기)

Coin & Styrofoam ball(conductive ink painted) electrostatic indicator. This [...]

Coin & Styrofoam ball(conductive ink painted) electrostatic indicator.
This is Franklin's Bell experiment.
Conductive ink used in this video is carbon ink.

동전과 스티로폼 공을 이용한 정전기 감지장치 입니다. 공이 움직이는 것은 프랭클린 벨의 원리와 같습니다.

1. 스티로폼 공에 먹물이나 전도성 잉크를 칠한 다음, 잘 말려줍니다.
2. 플라스틱 대롱을 적당한 크기로 잘라서 내부에 공을 넣은 다음, 동전으로 양쪽을 막아줍니다.
3. 양 동전 사이에 전위차를 주면, 정전기 인력으로 스티로폼 공이 어느 한쪽 동전으로 끌려가게 되고, 접촉하는 순간 같은 전하를 갖게 되어 밀어내게 되므로, 정전기가 없어질 때 까지 스티로폼 공은 왕복운동을 하게 됩니다.Show More

active

GCSE Science Revision - Painting using Static Electricity

active

Long hair vs. Van de Graaff generator

I visited the University of Sydney and had some fun with a Van de Graaff [...]

I visited the University of Sydney and had some fun with a Van de Graaff generator seeing how it would affect my hair.

Check out the video we made on Petr's channel about transformers: https://youtu.be/sAnOjc1iYYM

ft Liam - https://www.instagram.com/good__science/

Please subscribe ❤ https://www.youtube.com/user/tibees?s...

Twitter: https://twitter.com/TobyHendy
Instagram: https://www.instagram.com/tibees_/Show More

active

GCSE Physics - Static Electricity #23

This video covers: - That static charge builds up on non-conducting [...]

This video covers:
- That static charge builds up on non-conducting materials by the transfer of electrons
- Static charge doesn't normally build up on conducting materials, but can occasionally
- When static charge is discharged it can cause a spark

General info:
- Suitable for all GCSE and IGCSE courses
- See below for whether it is higher or foundation tier for your exam board
- See below for whether it is triple or combined for your exam board

Exam board specific info:
AQA - Only triple science (both foundation and higher tier)
IGCSE Edexcel - Only triple science (and only higher tier)
Edexcel - Only triple science (both foundation and higher tier)
OCR 21st Century - Only triple science (both foundation and higher tier)
OCR Gateway - Only triple science (both foundation and higher tier)Show More