A long coaxial cable has a solid inner conductor with radius a and a hollow outer conductor with radius b. If the inner conductor has p = Po/r, Po=const. and the oute conductor has -o, determine E for a
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- Consider a wire made of copper with conductivity 6.0 × 107 £¯¹m³¹, which has a circular cross-section of radius 0.56 mm. In a particular circuit, this wire carries a current of 4.5 A. What is the electric field, in volts per meter, inside this wire? If we replace this wire with a gold one of the same size, with conductivity 4.1 × 107 ¹m-¹, what will the electric field in the wire be?The current in a wire at time t is given by the expression I(t) = (2.4 A) e−t/(2.3 µs), where t is in µs. a. Graph I vs t for the interval 0 ≤ t ≤ 10 μs. b. Find an expression for the total amount of charge that has entered the wire at time t if Q(0) = 0 C. c. Graph the total amount of charge that has entered the wire as a function of time for the same interval as in part a.P Performance Matters Welcome, Bertiana! ► || A Tools - Question 2 of 51 Submit Test 04.CFE.2003380.2003390.2003836.2003840.Phy... A cell phone will typically have a power output of 1.4 watts when playing a song that lasts for 300 seconds. If the electrical resistance of the cellphone is 400 Q, what is the total charge needed to play the song?
- Figure 1.30 For Prob. 1.19. 1.20 Find V, in the circuit of Fig. 1.31. 10 = 2 A 30 V 6 A 1 + 6 A Figure 1.31 For Prob. 1.20. 12 V + 3 A + Vo 1 A + 28. V + 28 V +1 + 6 V 510 3 AParallel conducting plates create nearly uniform fields that are used to accelerate and direct beams of electrons. Typically we would free the electrons from a surface by heating it up. One way is to run a current through a wire with resistance. The power dissipated in the wire causes it to increase its temperature to the point that it can radiate that power away, mostly carried off as light. The hot electrons escape the potential barrier at the surface and are "free" to use. Consider a source of electrons that is small, like a tiny hot filament. The electrons are freed from the surface but the positive charge they leave behind holds them in a cloud near the filament. Now we add another plate at voltage VV some distance dd away. We put a little hole in that plate to enable the electrons to zip on through. The experiment looks something like this. While they seem antiquated, the concept is still useful. It is the basis of modern X-ray tubes, and until only a few years ago all…need help on c and e
- The circuit in the figure consists of switch S, a 5.10 V ideal battery, a 20.0 MQ resistor, and an airfilled capacitor. The capacitor has parallel circular plates of radius 4.90 cm, separated by 5.00 mm. At time t = 0, switch S is closed to begin charging the capacitor. The electric field between the plates is uniform. At t = 150 µs, what is the magnitude of the magnetic field within the capacitor, at radial distance 2.40 cm? Number i S C R Units TSubject:- physicsAn insulating belt moves at speed 30 m/s and has a width of 50 cm. It carries charge into an experimental device at a rate corresponding to 100 mA.What is the surface charge density on the belt?