Which one of the following statements is true?
A. Current flows in a capacitor circuit only while ions are permitted to flow through the dielectric material
B. Current flows in a capacitor circuit only while the charge on the plates is large enough to force the dielectric to conduct electrons
C. Current can flow in a capacitor circuit, but not through the dielectric material itself
D. Power returned to the circuit is always greater than the power absorbed
E. None of the above
Answer: Option C
This Question Belongs to Computer Science >> Electronic Principles
In an intrinsic semiconductor, the number of free electrons
A. Equals the number of holes
B. Is less than the number of holes
C. Is greater than the number of holes
D. Impossible to say
E. None of the above
A device that converts mechanical into electrical energy is?
A. solar cell
B. thermocouple
C. chemical cell
D. generator
E. None of the above
Which one of the following kinds of materials has the lowest permeability?
A. A diamagnetic material
B. A paramagnetic material
C. A feiTomagnetic material
D. All of the above
E. None of the above
The total impedance of a parallel RLC circuit:
A. always increases as the applied frequency increases
B. is equal to the sum of the values of resistance, inductive reactance and capacitive reactance
C. always decreases as the applied frequency increases
D. is maximum at the resonant frequency
E. None of the above
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