Exercise: Electronic Principles

Questions for: Electronic Principles

Which one of the following statements is true for the voltages in a series RL circuit?
A:
The total voltages is equal to the sum of the voltages across the resistance and inductance
B:
The voltage always has the same amplitude and phase for every part of the circuit
C:
The total voltage is less than the sum of the voltages across the resistance and inductance
D:
The total voltage lags the total current by less than 90
Answer: C
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If the current gain is 200 and the collector current is 100 mA, the base current is
A:
2 mA
B:
0.5 mA
C:
2 A
D:
200 A
Answer: B
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Suppose a current source has an Ideal current of 10 mA and an internal resistance of 20 MW. For what values of load resistance will the current source appear stiff?
A:
20 k Ohm or more
B:
200 k Ohm or less
C:
200 k Ohm or more
D:
20 km or less
Answer: B
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Which one of the following equations most directly determines the amount of current flowing through a resistor when you know the value of the resistor and the voltage drop across it?
A:
E = PR
B:
E = I2R
C:
I = E/R
D:
I = ER
Answer: C
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The equivalent of 1 megohms is:
A:
1 k ohm
B:
100,000 ohm
C:
one-millionth of an ohm
D:
one million ohms
Answer: D
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