The inductance of a coil can be increased by_________?
Correct answer: D. choosing core material having high relative permeability
- A. increasing core length
- B. decreasing the number of turns
- C. decreasing the diameter of the former
- D. choosing core material having high relative permeability
Explanation
For a coil, L = μN²A/l, so using a core with higher relative permeability increases inductance. Increasing core length or reducing turns would decrease it.
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