[amp_mcq option1=”Is unaffected by the supply frequency” option2=”Decreases with the increase in supply frequency” option3=”Increases with the increase in supply frequency” option4=”Becomes zero with the increase in supply frequency” correct=”option2″]
The correct answer is: B. Decreases with the increase in supply frequency.
Inductance is a measure of how much an inductor resists changes in current. The inductance of a coil is proportional to the number of turns in the coil and the permeability of the core material. The inductance of a coil is also inversely proportional to the square of the supply frequency. This means that as the supply frequency increases, the inductance of the coil decreases.
Here is a brief explanation of each option:
- Option A: Inductance is unaffected by the supply frequency. This is not true. The inductance of a coil is inversely proportional to the square of the supply frequency.
- Option B: Inductance decreases with the increase in supply frequency. This is true. The inductance of a coil is inversely proportional to the square of the supply frequency.
- Option C: Inductance increases with the increase in supply frequency. This is not true. The inductance of a coil is inversely proportional to the square of the supply frequency.
- Option D: Inductance becomes zero with the increase in supply frequency. This is not true. The inductance of a coil can never be zero.