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Computer Science - Electronic Principles

Exercise : Electronic Principles - Section 4
46.
Which one of the following statements regarding ac circuits is correct?
Current and voltages are in phase through a resistor
Current leads the voltage through a resistor
Current lags the voltage through a resistor
All of the above
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
Which one of the following statements most accurately describes the nature of inductive reactance?
Inductive reactance is an opposition to current flow in dc circuits
Inductive reactance is an opposition to current flow in ac circuits
Inductive reactance is another term for counter emf
Inductive reactance is a force that tends to overcome the effects of counter emf
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
What are the main parts of an atom?
Protons only
Electrons, protons, and ions
Electrons, ions, and neutrons
Electrons, protons, and neutrons
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
Current is
The flow of charged particles through a material
An imbalance of electrical charges
The force that causes electrons to flow
The number of free electrons in an atom
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
A real voltage source has
Zero internal resistance
Infinite internal resistance
A small internal resistance
A large internal resistance
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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