Suppose you wanted to improve a moving. coil microphone so that it was more sensitive (e, so that it outputs a stronger induced emf for a given sound intensity). Which of the following will improve the sensitivity? a. Replace the diaphragm with one that moves more easily. b. Replace the magnet with a stronger one c. Increase the col with one with more turns d. All of the above e. None of the above

Question

Physics

Luka Wright

20 February, 03:29

Suppose you wanted to improve a moving. coil microphone so that it was more sensitive (e, so that it outputs a stronger induced emf for a given sound intensity). Which of the following will improve the sensitivity? a. Replace the diaphragm with one that moves more easily. b. Replace the magnet with a stronger one c. Increase the col with one with more turns d. All of the above e. None of the above

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Answers (1)

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Schultz · Answer 1

d. All of the above.

Explanation:

The sensitivity of microphone will be more if even feeble sound can create greater vibration in diaphragm. Naturally it is possible if diaphragm is light and can move easily. The movement it it is controlled by current in the coil which makes it electromagnet. All factors that increase the strength of magnet like increasing the no of turns, or a strong magnet will increase the sensitivity.