where did you read that ?hokhani said:However, we know that without any bias the electrons also move with very large velocity (of the order 10^5 m/s).
hokhani said:When a bias is applied to a wire, due to the resistance of a wire, the electrons colliding with the atoms make the wire warmer. However, we know that without any bias the electrons also move with very large velocity (of the order 10^5 m/s). How about the collision of these rapid electrons with atoms? Do these collisions warm the wire or not?
Please see Physics(2) (Electricity & Magnetism), Resnick, Halliday, Krane, Volume Three, Fifth edition, page 665, the left column.davenn said:where did you read that ?
Thanks. Do you believe that in the equilibrium conditions, the thermal energy is preserved in the system?anorlunda said:still
hokhani said:Thanks. Do you believe that in the equilibrium conditions, the thermal energy is preserved in the system?
Right, Many thanks.anorlunda said:Do you understand now? Your original question was asking if thermal energy creates thermal energy.
The resistance of a wire without a voltage bias refers to the opposition that a wire presents to the flow of electric current when there is no voltage applied to it. It is a measure of how difficult it is for electrons to move through the wire, and is typically measured in ohms (Ω).
The resistance of a wire without a voltage bias can be calculated using Ohm's Law, which states that resistance is equal to the voltage across the wire divided by the current flowing through it. This can be represented by the formula R = V/I, where R is resistance, V is voltage, and I is current.
Yes, the resistance of a wire without a voltage bias is directly proportional to its length and inversely proportional to its cross-sectional area (thickness). This means that as the length of the wire increases, the resistance also increases, while a thicker wire will have a lower resistance compared to a thinner wire of the same material.
The resistance of a wire without a voltage bias can be affected by various factors such as the type of material used for the wire, its length and thickness, and its temperature. Different materials have different levels of electrical conductivity, which can impact the wire's resistance. In addition, as the temperature of a wire increases, its resistance also increases.
The resistance of a wire without a voltage bias plays a crucial role in determining the flow of electric current in a circuit. A higher resistance means that more voltage is needed to maintain the same current, which can lead to a decrease in the overall efficiency of the circuit. It is important to consider the resistance of wires when designing and building electrical circuits.