Which one of the following statements is true for voltage in a parallel circuit?
A. The total voltage in a parallel circuit is equal to the average value of the individual voltages
B. The total voltage in a parallel circuit is always less than the value of the smallest voltage
C. The total voltage is equal to the sum of the voltages across the individual branches in a parallel circuit
D. The total voltage of a parallel circuit is the same as the voltages across each branch
E. None of the above
Answer: Option D
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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