Electrical Resistivity Electrical resistivity is a fundamental property of materials that describes their ability to impede the flow of electric current. It is a measure of how strongly a material opposes the passage of electric charges. Resistivity is denoted by the symbol “ρ” (rho) and is measured in ohm-meters (Ω·m) or ohm-centimeters (Ω·cm). Resistivity depends…
Ohms law Ohm’s Law is a fundamental principle in physics and electrical engineering that describes the relationship between voltage, current, and resistance in an electrical circuit. It states that the current flowing through a conductor is directly proportional to the voltage applied across it and inversely proportional to the resistance of the conductor. Mathematically, Ohm’s…
Mobility In the context of physics, “mobility” refers to the ability of particles or objects to move or be transported. It is a concept that is relevant in various areas of physics, including solid-state physics, condensed matter physics, and semiconductor physics. In solid-state physics, mobility typically refers to the mobility of charge carriers such as…
Velocity Velocity is a physical quantity that describes the rate of change of an object’s position. It is a vector quantity, meaning it has both magnitude and direction. Velocity is defined as the displacement of an object divided by the time taken to cover that displacement. In equation form, velocity (v) can be expressed as:…
Electric current Electric current refers to the flow of electric charge in a conductor. It is the rate at which electric charges, typically electrons, move through a circuit. The flow of current is driven by a potential difference or voltage applied across the circuit. Electric current is measured in units called amperes (A), named after…
Current Electricity Current Electricity is a branch of physics that focuses on the study of electric currents and their properties. It deals with the flow of electric charge in conductors and the behavior of components in electric circuits. Key concepts in Current Electricity include: Understanding the principles and applications of Current Electricity is essential in…
A System Of Charges In the context of physics, a “system of charges” refers to a configuration where multiple electric charges interact with each other. It involves the study of the electric forces and fields produced by these charges and their effects on each other. Key concepts related to a system of charges include: Understanding…
Dipole A dipole refers to a pair of equal and opposite charges or poles separated by a small distance. It can exist in various contexts, such as electric dipoles and magnetic dipoles. These are the key aspects related to the concept of a dipole. Understanding dipoles is important in various areas of physics, including electromagnetism…
Continuous charge distribution Continuous charge distribution refers to a situation in which electric charge is spread out continuously over a region rather than being concentrated at specific points. It can be described mathematically using charge density, which represents the amount of charge per unit volume, per unit area, or per unit length depending on the…
Superposition Principle The Superposition Principle is a fundamental concept in physics that states that when two or more waves or physical quantities are present in a given region, the resultant wave or quantity at any point is the algebraic sum of the individual waves or quantities. This principle applies to various areas of physics, including…
