Q 9 please Q5: A spherical capacitor is formed from two concentric spherical conducting shells separated by air.Inner sphere has radius a= 5 cm and outer has radius b= 10 cm. What is the capacitance (in pF)of the capacitor?A) 66.7B) 24.89: What is the definition of conductivity?A)Current densityElectric FieldB)06: Two identical capacitors C₁ and C₂ have the same charge. Then we insert dielectric material (K2) between the plates of C₂ only. The ratio U₂/U, of the energies stored in C, and C₂ is:C) 1/2B) 1/3A) 3D) 2E) 13.5C) 33.307: When a wire 5 m long with a diameter of 0.05 mm is connected to a 12 V battery, a current of 4 Aflows through it. The resistivity (in 2.m) of the wire material is:A) 5.9 x 10-10B) 7.9 x 1010C) 3.5 x 10-¹0D) 1.2 x 10"E) 2.4 x 10¹08: Over a certain region of space, the electric potential is given by V(x) = 1500 x², where x in meterand V in Volt. The electric field (in kV/m) at x = 0.8 m is:A) - 3.9B) - 2.4iC) - 10.2iD) - 8.1VoltageCurrentB) 146.3D) 41.7CurrentAreaE) 11.1C) 117.0D) (Voltage).(Current) E)A copper wire of radius 2 mm carries a current of 30 A. If Copper has 8.5 x 1028 freeelectrons/m³, then the drift speed of electrons (in μm/s) is:D) 87.8E) - 12.3/Electric FieldCurrent densityE) 175.5

Answered: Image /qna-images/answer/485e1c0d-0729-4f2c-9541-cac4f11bebf4.jpg

Answered: 9: What is the definition of…

9: What is the definition of conductivity? A) Current density Electric Field B) Voltage Current C) Current Area D) (Voltage).(Current) E) Electric Field Current density

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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