Drift velocity Definition and 62 Threads

The electron drift velocity in a wire is about 0.1 mm/s. http://www.ac.wwu.edu/~vawter/PhysicsNet/Topics/DC-Current/Current.html If a coil were constructed from a helical nonconducting tube and filled with mercury such that if a current was passed through the mercury, a magnetic field would...

Homework Statement A thin metal film of length 1.00 cm, width of 0.250 cm, and thickness of 29.0 micrometers is used to measure the Hall effect. A current of 2.60 A is maintained along the length of the sample. The Hall voltage of 16.0 microVolts is detected across its width, when a magnetic...

Just hoping you might explain the physics here for me. An electron is placed in an oscillating electric field, say, E = E_0\sin(\omega t) and as a result accelerates in x at, a = a_0\sin(\omega t) (grouped some constants in a_0). Solving for the resulting motion yields, x =...

[SOLVED] Another Current and Drift Velocity Question 1. A car's starter motor draws 50 A from the car's battery during startup. If the startup time is 1.5 s, how many electrons pass a given location in the circuit during that time? 3.As current = rate of flow of charge, I = q/t...

[SOLVED] Current and Drift Velocity (multiple choice) 1. In a dental X-ray machine, the movement of accelerated electrons is east. The current associated with these electrons is in what direction: (a) east, (b) west, or (c) zero? 3. At first I thought it was B (west) because...

Not sure if this should be in this forum, but let's try. The problem is about 2 samples. One pure Na and one InSb. I want to determine the hall voltage when we send a current of 100mA trough the samples and the magnetic field is B = 0.1T. The samples are dimensioned "squared" 5x1x5mm. We...

In class today we talked about drift velocity and we measured it for a 14 gauge copper conductor wire. It came out to be 3.55 * 10^-3 cm/s. I was wondering if the speed is so slow, then how can light come on instanteneously when you flip the switch over long distances? Is it because there might...

Question asks: A potential difference of 3.0V is applied to the ends of a copper wire which is 0.5m long. In copper at room temperature, the average time interval between collisions is \tau = 2.7*10^{-14}s. What is the drift velocity of the free electrons in the wire? Well, I know that...

In a circuit, if the voltage is doubled, what happens to the drift velocity?

If I move a strip of copper mechanically with my hand through a uniform magnetic field will their be a drift velocity? And if so will the drift velocity be in the same direction as the moving copper strip? What would the magnitude of the drift velocity be if this happens? Can you have a drift...

for a normal solid cylindrical resistor, made of say copper, at room temperature, describe the relationshop between the current in the conductor, the drift velocity of conduction electrons in the conductor, and the thermal velocity of conduction electrons in the conductor.

I don't even know where to begin on this one. SPEAR, a storage ring about 72.0 m in diamter at the Stanford Linear Accelorator, has a 20.0 A circulating beam of electrons that are moving at nearly the speed of light. How many electrons are in the beam? My thoughts, hmmmm. Nothing I can...