Question 3 In a cathode ray tube, 3.5 x 10¹5 electrons strike the screen in 30 seconds. What current does this represent? A B C D 8.57 x 10-15 A 1.68 x 10-² A 10-5 A 10-4 A 1.87 x 5.60 x
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- 5. An electron orbiting an atomic nucleus forms its own kind of current loop. For a hydrogen atom in the lowest energy state, a single electron orbits the nucleus with a radius of 52.9 pm (5.29 × 10-11 nm) and a speed of about 2.2 x 106 m/s. X Z (a) Conventional current measures the amount of charge passing a certain point per unit time: I = In this case, Qis the electron charge, and At is the time it takes the electron to complete one full orbit. Using this information, what is the magnitude of the conventional current in the hydrogen atom? Answer: I = 1.05 mA. (b) What is the magnetic field (both magnitude and direction) at a distance of 5.29 nm along the axis of the atom, at the point indicated? Answer: -1.25 × 10-5 T 2Please help.The graph represents the relationship between the potential difference across a metal conductor and the current through the conductor at a constant temperature. Potential Difference vs. Current 8.0 E 6.0 4.0 2.0 0.2 0.4 0.6 0.8 Current (A) Potential Difference (V)
- A wire has a current density of 7.09 x 10° A/m?. If the cross-sectional area of the wire is 2.11 mm², what current I does the wire carry? A. With this current, how much time t is required for 4.05 x 100 electrons to pass any point on the wire?Copper has a density of 8.96 x 10³ kg/m³ and a resistivity of 1.70 × 1080.m. A. On the basis of the classical free-electron gas model, assuming that each Cu atom contributes one electron to the electron gas, calculate the average time between collisions of the electrons. B. Calculate the mean free path from the mean free time and the electron's thermal velocity. C. How does the mean free path compare with the spacing between atoms in the lattice of Cu?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 =