Q 10 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/5df5b59f-3db3-4207-9510-9deaecb91445.jpg

Answered: Acopper wire of radius 2 mm carries a…

Acopper wire of radius 2 mm carries a current of 30 A. If Copper has 8.5 x 1028 free ectrons/m³, then the drift speed of electrons (in μm/s) is: 5 B) 146.3 C) 117.0 D) 87.8 E) 175.5

Physics for Scientists and Engineers

10th Edition

ISBN:9781337553278

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter27: Direct-current Circuits

Section: Chapter Questions

Problem 46AP: (a) Determine the equilibrium charge on the capacitor in the circuit of Figure P27.46 as a function...

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Question

Q 10 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) 66.7
B) 24.8
9: What is the definition of conductivity?
A)
Current density
Electric Field
B)
06: Two identical capacitors C₁ and C₂ have the same charge. Then we insert dielectric material (K
2) between the plates of C₂ only. The ratio U₂/U, of the energies stored in C, and C₂ is:
C) 1/2
B) 1/3
A) 3
D) 2
E) 1
3.5
C) 33.3
07: When a wire 5 m long with a diameter of 0.05 mm is connected to a 12 V battery, a current of 4 A
flows through it. The resistivity (in 2.m) of the wire material is:
A) 5.9 x 10-10
B) 7.9 x 1010
C) 3.5 x 10-¹0
D) 1.2 x 10"
E) 2.4 x 10¹
08: Over a certain region of space, the electric potential is given by V(x) = 1500 x², where x in meter
and V in Volt. The electric field (in kV/m) at x = 0.8 m is:
A) - 3.9
B) - 2.4i
C) - 10.2i
D) - 8.1
Voltage
Current
B) 146.3
D) 41.7
Current
Area
E) 11.1
C) 117.0
D) (Voltage).(Current) E)
A copper wire of radius 2 mm carries a current of 30 A. If Copper has 8.5 x 1028 free
electrons/m³, then the drift speed of electrons (in μm/s) is:
D) 87.8
E) - 12.3/
Electric Field
Current density
E) 175.5

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