Final answer:
The investigation involves calculating the intensity of electromagnetic radiation from high voltage power lines based on magnetic field strength. This includes exploring current responsible for the fields, potential biological effects, and the concept of magnetic shielding.
Step-by-step explanation:
Electromagnetic Fields and High Voltage Power Lines
To investigate electromagnetic fields produced by high voltage power lines, we can simulate an investigation by calculating the intensity of electromagnetic radiation in watts per square meter (W/m²). This can be determined using the measured magnetic field strength in a home near the power lines, which is known to average less than a microtesla (μT). Using Faraday's law, the relationship between a changing magnetic field and the induced electrical current can be explored to understand the effects and safety surrounding these fields.
Additionally, we can discuss the energy that radiates from a section of power lines several hundred meters long and compare it to the energy carried by the lines. This involves calculating the approximate current responsible for the μT fields at a distance. Understanding these concepts helps us evaluate potential biological effects and the efficacy of magnetic shielding, such as the Faraday cage effect, for electric fields.
It's also useful to understand electric field lines, electromagnetic spectrum, electromagnetic waves, and the concepts of electromotive force (emf) and extremely low frequency (ELF). These are crucial when studying the impact of electromagnetic fields on the environment and human health.