Electronic Principles
A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current?

200 mA
7.8 mA
208 mA
300 mA
None of these

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Electronic Principles
Voltage is

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

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