Electronic Principles
The transistor has a collector current of 2 mA. If the current gain is 135, what is the base current?

7.8 µA
14.8 µA
None of these
10.3 µA
7.75 µA

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Electronic Principles
Which one of the following is a direct statement of Ohm's law?

The algebraic sum of currents entering and leaving a point is equal to zero
The total resistance of a parallel circuit is less than the value of the smallest resistance
None of these
The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it
The algebraic sum of voltages in a loop is equal to zero

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Electronic Principles
The dielectric constant of a material is a measure of:

None of these
how well the material concentrates magnetic lines of force
how well the material concentrates electrostatic lines of force
the amount of opposition to the current flow
the amount of voltage it can withstand before breaking down

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Electronic Principles
The period of a waveform is:

None of these
the time required to complete one full cycle
equal to 0.707 times the peak amplitude
the time required for the voltage to rise from 10% to 90% of the peak amplitude
the number of cycles completed in one second

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