Uniform circular motion is a fundamental concept in physics that describes the motion of an object traveling in a circle at a constant speed. This motion is characterized by the object’s angular velocity ($\omega$) and linear velocity ($v$), both of which remain constant throughout the motion. Understanding uniform circular motion is crucial for comprehending various physical phenomena and applications, ranging …
This topic covers “Current Electricity” of O Level Physics. (Equivalent to American high school diploma) If this is too basic for you, you can try the more advanced version here. Sub-Topics: Quiz:
Force On A Current-carrying Conductor When current-carrying conductor is placed in a magnetic field, it will experience a force when the magnetic field direction is not parallel to the current direction. The magnitude of the force is maximum when the magnetic field and current directions are mutually perpendicular to each other. The force decreases when the angle between the magnetic field …
Expanding and refining the given content, we aim to provide a comprehensive and understandable explanation of thermistors, focusing on the Negative Temperature Coefficient (NTC) type and contrasting it with the Positive Temperature Coefficient (PTC) type and metallic conductors. Thermistors: An Overview A thermistor is a type of resistor whose resistance varies significantly with temperature. The term “thermistor” is a blend …
The study of the electrical characteristics of a filament lamp provides insightful information about its behavior under different conditions, particularly how its resistance changes with temperature. To understand this phenomenon comprehensively, it’s essential to delve into the relationship between voltage (V), current (I), and resistance, as well as the underlying physics governing the behavior of the filament when it is …
Semiconductor Diodes A semiconductor diode is a two-terminal electronic component made from semiconductor material, typically silicon or germanium, doped with impurities to create a p-n junction. This junction has unique electrical properties, allowing current to flow more easily in one direction than in the opposite direction, which is the fundamental characteristic of diodes. Forward Bias and Reverse Bias Breakdown Region …
Electrical Conductivity in Metals Metals are known for their ability to conduct electricity. This electrical conductivity is due to the presence of free electrons within the metallic lattice. In a metal, atoms are arranged in a closely packed lattice structure, and the outermost electrons of these atoms are not bound to any specific atom. Instead, they are free to move …