Electronic Principles
The transistor has a collector current of 10 mA and a base current of 40 mA. What is the current gain of the transistor?

300 µA
350 µA
None of these
250 µA
0.25 µA

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Electronic Principles
Which one of the following statements is true for the voltages in a series RC circuit?

The total voltage is less than the sum of the voltages across the resistance and capacitance
The voltage always has the same amplitude and phase for every part of the circuit
The total voltage is greater than the sum of the voltages across the resistance and capacitance
None of these
The total voltage is equal to the sum of the voltages across the resistance and capacitance

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Electronic Principles
Which one of the following statements most accurately reflects the nature of ac power?

None of these
The current in an ac circuit flows in one direction, but changes value periodically
The current in an ac circuit flows in two directions at the same time
The current in an ac circuit changes direction periodically
The current in an ac circuit flows in one direction at a steady level

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