An 18 gauge copper wire (diameter 1.02 mm) carries a currentwith a current density of 3.20 * 10^6 A/m2. The density of freeelectrons for copper is 8.5 * 10^28 electrons per cubic meter. Calculate(a) the current in the wire and (b) the magnitude of the drift velocity ofelectrons in the wire.

Energetic particles, such as protons, can be detected with a silicon detector. When a particle strikes a thin piece of silicon, it creates a large number of free electrons by ionizing silicon atoms. The electrons flow to an electrode on the surface of the detector, and this current is then amplified and detected. In one experiment, each incident proton creates, on average, 37,000 electrons; the electron current is amplified by a factor of 100; and the experimenters record an amplified current of 3.5 μ.Α. Part A How many protons are striking the detector per second? N = Submit 5 ΑΣΦ Request Answer ? protons per second

A current I =0.35 A flows through a cylindrical resistor made out of some unknown ceramic-like composite. The radius of the cylindrical body is 4.25 mm while the length is 1.65 cm. If the potential drop over the resistor is 7.54 V, what is the resistivity of the unknown ceramic material? (Answer in Ohm*m)

Energetic particles, such as protons, can be detected with a silicon detector. When a particle strikes a thin piece of silicon, it creates a large number of free electrons by ionizing silicon atoms. The electrons flow to an electrode on the surface of the detector, and this current is then amplified and detected. In one experiment, each incident proton creates, on average, 34,000 electrons; the electron current is amplified by a factor of 100; and the experimenters record an amplified current of 3.5 μA. How many protons are striking the detector per second?

A linear accelerator produces a pulsed beam of electrons.The pulse current is 0.50 A, and the pulse duration is 0.10 ms. (a) How many electrons are accelerated per pulse? (b) What is the average current for a machine operating at 500 pulses/s? If the electrons are accelerated to an energy of 50 MeV, what are the (c) average power and (d) peak power of the accelerator?

What is the current in a wire of radius R = 2.01 mm if the magnitude of the current density is given by (a) Ja = Jor/R and (b) Jb = Jo(1 - r/R) in which ris the radial distance and Jo = 6.22 x 104 A/m2? (c) Which function maximizes the current density near the wire's surface? (a) Number Units (b) Number Units (c)

The vector current density of a 3m long and 3mm diameter conductor is given as 155630 A/m^2. Determine the curent on the conductor, its free electron density, the drift velocity of the charges and the number of electrons passing through the conductor for 3 seconds.

A wire has a current density of 7.77 x 10° A/m. If the cross-sectional area of the wire is 3.57 mm2, what current I does the wire carry? I = A. With this current, how much time t is required for 4.39 x 1020 electrons to pass any point on the wire? t =