Four dies of electric material having relative permittivities 4, 5, 6 and 7 and thicknesses of 2 mm, 3 mm, 4 mm and 5 mm respectively are placed between conductive plates measuring 50 mm x 50 mm. If 100 V is applied between the plates, find the electric stress across each material and the voltage across each material.

Four dies of electric material having relative permittivities 4, 5, 6 and 7 and thicknesses of 2 mm, 3 mm, 4 mm and 5 mm respectively are placed between conductive plates measuring 50 mm x 50 mm. If 100 V is applied between the plates, find the electric stress across each material and the voltage across each material.

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter12: Electronic Control Devices

Section: Chapter Questions

Problem 14RQ

See similar textbooks

Similar questions

6. You take a copper wire as shown in the figure, where the cross-section area A doubles between parts 1 and 2 of same length, and apply a potential difference across it so that a current flows from part 1 to 2. What happens in part 2 of the wire, as compared to part 1?" r A) The electron current increases B) The electron density increases C) The resistance increases D) The electric field or drift speed decrease E) The electric field and drift speed decrease E
A copper conductor has a diameter of 0.6 in and it is 1200 ft long. Assume that it carries a total dc current of 50 A. Find the total resistance of the conductor and the current density. The resistivity of copper is 1.72 x 10-8 2-m.
There is a steel guide bar (According to figure), knowing that its conductivity is 7x106 (ohm - m)-1 . Determine the resistance at 45 ° C and the gauge of a copper wire for its connection.
Charges A andB are placed a distance of 1.5m from one another. The charge of particle A is 0.3 C whereas the charge of particle B is 0.4 C. Charge B experiences an electrostatic force of FB from charge A. Similarly, charge A experiences an electrostatic force of FA from charge B. What is the ratio of FA to FB?
Particles of charge +75μC, +48μC, and−85μCare placed in a line (asshown in the figure below). The center one is 0.35mfrom each of the others. Calculatethe net force on the negative charge due to the other two.
Ferromagnetic materials have this characteristic. A. A relative permeability slightly less than one. B. A relative permeability slightly greater than one. C. A very high resistivity. D. A high relative permeability.
An aluminium rod with square cross section is 1.3 m long and 3.8 mm on edge ) What is the resistance between its ends? The resistivity of aluminium is 2.75 - 10-8 Q.m. (ii) What must be the diameter of a cylindrical copper rod of length 1.3 m if its resistance is to be the same as that of the aluminium rod? The resistivity of copper is 1.69 * 10-8 Q.m. (iii) Calculate the current (in A) and the current density (in A/m^2) of the cylindrical copper if the potential drop across the ends of the wire is 0.060 V. Select one: a. (i) 3.27 x 10-30 (ii) 15.3 × 10-3 m (iii) l= 18.3 A and J=1 x 105 A/m2 b. (i) 2.50 x 10-3n (i) 3.4 × 10-3 m (iii) l= 24 A and J=2.64 x 10 A/m2 c. (i) 2.50 x 10-3 (ii) 3.4 x 10-3 m (iii) l= 24 A and J=2.08 x 106 A/m2 d. (i) 3.27 x 10-3 (ii) 8.14 x 10-3 m (iii) l= 18.3 A and J=2.64 x 106 A/m2
Assuming constant temperature, what happens to the resistance of a material when the cross-sectional area increases? Choose among increases, decreases and no change
The 'skin effecť is a phenomenon experienced when current flows through a metal. Which two of the following statements are correct? 15 Select one or more: O a. A smaller 'skin depth' implies a higher resistance O b. Direct current can cause the skin effect O c. The skin depth is smaller in highly conductive metals O d. The skin depth is larger in metals with high magnetic permeability
Question 1 A ferromagnetic core with a relative permeability of 1500 is shown in Figure 2. The dimensions are as shown in the diagram, and the depth of the core is 7 cm. The air gaps on the left and right sides of the core are 0.070 and 0.020 cm, respectively. Because of fringing effects, the effective area of the air gaps is 5 percent larger than their physical size. If there are 400 turns in the coil wrapped around the center leg of the core and if the current in the coil is 1.0 A, what is a) the flux in each of the left, center, and right legs of the core? b) the flux density in each air gap? 7 cm ст ст 30 cm 30 cm 7 cm 400 turns 0.05 cm 30 cm 0.07 cm 7 cm Core depth = 7 cm Figure 2
Find the conductivity, if the resistance is 3 k2, length is 10 m, area 2 m', and the carrying curent is 2 mA.
What is the force F on the 1.0 nC charge in the middle of Figure 2 due to the four other charges? Notice:Give your answer in component form(in x and y components). Along with calculations also write theory to help me understand,i have got stuck with different answers to this question,plz help me answering properly.