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ET 3

A detailed illustration of a spherical capacitor with electric field lines, surrounded by various electric circuit components like resistors, inductors, and capacitors, set in a modern laboratory environment.

Spherical Capacitor and Circuit Theory Quiz

This quiz tests your knowledge on capacitors, electric circuits, and related physics principles. Ideal for students and enthusiasts, it covers various concepts from spherical capacitors to resonant circuits.

  • 10 multiple-choice questions
  • Test your understanding of electric fields
  • Explore concepts in capacitance and resonance
9 Questions2 MinutesCreated by ElectroNerd257
The capacitance of the spherical capacitor (the capacitor plates are two metallic spheres, concentric, of radius r_e and r_i, and the dielectric between the spheres has the constant permittivity ε), is:
C = (4*π*ε) *(r_e-r_i) / (r_e * r_i) [F]
C = (2*π*ε*r_e*r_i) / (r_e - r_i) [F]
C = (4*π*ε*r_e*r_i) / (r_e - r_i) [F]
C = (4*π*ε*a*b) / (a-b) [F]
The energy stored in the electric field of a capacitor is:
C
A
D
B
The electric induction of the cylindrical capacitor inside the integration surface Σ, that is also a cylinder, coaxial with the two cylindrical plates of the capacitor, having the radius a and the length d, is:
D = q / (2π * a * d) [C/m*2]
D = q / (2π * r * l) [C/m*2]
D = q / (2π * r * d) [C/m*2]
D = q / (2π * a * l) [C/m*2]
When using the node potential method, which of the affirmation is wrong?
The real currents from the circuit branches are determining by applying the Ohm's Law on each branch
L-n+1 equations will be written
In the written equations, Σlsck represents the sum of the sortcircuit injected in node k by sources from the adjacent branches to this node (k)
A reference node is chosen, preferable the N-th node
In an electric circuit, the resonance pulsation, ω:
Depend only of L and C
Depend of R, L, C
Depend only of R
Depend only of R and L
-2
5
3
2
The instant voltage at the terminal of an ideal condenser is given by equation:
D
C
B
A
The propagation constant of the symmetric quadripole is determined by the equation:
A
D
C
B
At the R, L, C series resonance
The total absorbed current has the maxim value
No correct option
Voltage drop on the coil = voltage drop on condenser
The current has the maxim value
Voltage drop on coil = voltage drop on resistance
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