oblem 2 A vacuum-tube diode consists of two concentric cylindrical electrodes of opposite charge. The electric...
Problem 2 A vacuum-tube diode consists of two concentric cylindrical electrodes of opposite charge. The electric potential between the electrodes is given by V(x)C/ where x is in meters and C'is a constant. Let the distance between the electrode equal 13.0 mm and their potential difference equal 240 V (a) Calculate the value for C. 7.85x10 V/m b) Derive and expression for the electric field between the electrodes as a function of x. [Answer not given. (c) Determine the magnitude...
A capacitor is constructed of two concentric conducting cylindrical shells. The radius of the inner cylindrical shell is 2.37 x10-3 m, and that of the outer shell is 2.47 x 10-3 m. When the cylinders carry equal and opposite charges of magnitude 2.0 x 10-10 C, the electric field between the plates has an average magnitude of 3.8 x 104 V/m and is directed radially outward from the inner shell to the outer shell. Determine (a) the magnitude of the...
The electric potential V in the space between the plates of a given vacuum tube is given by V = (4.50×102) x2, where V is in volts if x, the distance from one of the plates, is in meters. Calculate the magnitude and direction (sign) of the electric field at 2.880 cm.
2) Consider two large, metal plates with equal and opposite charges as shown below: OV 300 V 3.0 mm 100 V 200 v a) Which plate, left or right, is the positively charged plate? How do you know? (1 pt) b) What is the magnitude and direction of the electric field at point A located halfway between the plates: y=0 m, x= 1.5mm? (2 pts) c) What is the magnitude and direction of the electric force felt by an electron...
13. If a charge of 3.0 coulombs is transferred through a potential is: difference of 6.0 volts, the amount of work done zero. b. 0.50 c. 2.0 d. 18 J none of these One volt is equal to: a. one (N/C)(m) b. one (kg my (s C) c. one ev (1.6x 10- C) d. all of these e. e. -14. none of these 15. A charge is moved through the potential difference from A to B. In which case is...
Consider a cylindrical capacitor like that shown in Fig. 24.6. Let d = rb − ra be the spacing between the inner and outer conductors. (a) Let the radii of the two conductors be only slightly different, so that d << ra. Show that the result derived in Example 24.4 (Section 24.1) for the capacitance of a cylindrical capacitor then reduces to Eq. (24.2), the equation for the capacitance of a parallel-plate capacitor, with A being the surface area of...
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expermint e/m avr=1.71033*10^11
7 2 points of the following options, which conditions for V or I produce the largest radius of the electron beam path r? Hint: Use e/m= 2V (5/4)*aP/(Nuo Ir) Maximum land Maximum V O Maximum land Minimum V Minimum I and Maximum V Minimum I and Minimum V 8 2 points By what factor will change if the radius of the...