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

14.8 µA
7.8 µA
7.75 µA
10.3 µA
None of these

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Electronic Principles
Which one of the following statements best describes magnetic hysteresis?

Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet
None of these
Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently
Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet
Hysteresis is most apparent when the core material is saturated

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Electronic Principles
Voltage is

The smallest electrically charged particle
Trie force that causes electrons to flow
The number of free electrons in an atom
The flow of charged particles through a material
None of these

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