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Questions and Answers
Which of the following best describes a magnetic circuit?
Which of the following best describes a magnetic circuit?
- A closed path followed by lines of magnetic flux. (correct)
- A closed path followed by lines of electric flux.
- An open path followed by lines of electric flux.
- An open path followed by lines of magnetic flux.
What is the role of a copper wire in confining electric current?
What is the role of a copper wire in confining electric current?
- It increases the conductivity of the electric current. (correct)
- It decreases the conductivity of the electric current.
- It increases the permeability of the electric current.
- It decreases the permeability of the electric current.
What is the driving force that causes a magnetic field in a magnetic circuit?
What is the driving force that causes a magnetic field in a magnetic circuit?
- Electric current
- Electromotive force (correct)
- Magnetic flux
- Permeability
What unit is used to express the value of magnetomotive force?
What unit is used to express the value of magnetomotive force?
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What is the symbol for magnetomotive force?
What is the symbol for magnetomotive force?
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