Electronic Principles
At room temperature an intrinsic semiconductor has

No holes
many free electrons
many holes
a few free electrons and holes
None of these

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Electronic Principles
The total impedance of a parallel RLC circuit:

is equal to the sum of the values of resistance, inductive reactance and capacitive reactance
always increases as the applied frequency increases
None of these
always decreases as the applied frequency increases
is maximum at the resonant frequency

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