ET 3
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
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 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
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