# Electricity, Magnetism and Light Principles

Anonymous

### Question Description

Instructions

In a two-page paper, identify the physics principles contained within the following scenario. Explain how these principals connect to electricity, magnetism, or light in modern applications in physics. Finally, consider the different concepts in which James Clerk Maxwell did research, and give an example of one of these concepts in use in your life. For instance, Maxwell's research led to the development of radio waves. If you listen to a radio, then you are using Maxwell's research. Provide another example from your own experience, compare, and contrast your scenario to the provided scenario below.

Scenario

Mandy took a trip to Rome, Italy. Once landed and inside the terminal, she turned her cell phone back on, but it was not charged. She found a charging station with a USB adaptor port. The USB was universal, providing 5 volts in any country you were in, and a small red LED next to her phone's screen told her the phone was successfully charging. This USB port seemed to have very high amperage, meaning it charged her phone quickly. She was aware, though, that almost all of Italy's electricity was generated by burning fossil fuels, and thus she was determined after this to use the portable solar charger she had bought rather than wall electricity.

TutorLarra
School: Cornell University

Attached.

Title: Electricity, Magnetism and Light Principles
Introduction: Modern devices such as cell phones and methods of generating electricity operate
based on specific physics principles. Michael Faraday’s principle of electromagnetic induction is
considered a great discovery for the modern world
Thesis statement: From the operation of cell phone chargers to the operation of LED lights, the
physics principles of electromagnetic induction and electroluminescence depict how electricity,
magnetism, and light are connected.
Paragraph 1:
Main idea: From the case scenario Mandy’s cell phone was not charged, and when she found a
charging station with a USB port she plugged it in.
Supporting Points:
In most regions, electricity for domestic use ranges from 220 volts to 240 volts.
Charging stations generate a 5 volts electricity allowing cell phones to be charged efficiently
Step-down in voltage is made possible by a step-down transformer enables the much higher AC
voltage and current to be lowered to a safer voltage level to be used by small devices.
Paragraph 2:
Main idea: After plugging her cell phone, Mandy knew that it was charging because of the LED
indicator light on the screen.
Supporting points:
The LED indicator light works based on the law of electroluminescence
The principle is founded on both electrical and optical phenomenon when a material emits lights
when exposed to a strong electrical field
The functionality behind the electroluminescence principle in LED lights ...

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