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Self Inductance

30. Induction and Inductance / Self Inductance / Problem 3

A toroid is marked 48.5 mH. Its diameter is 15.0 cm, and its cross-sectional area is 1.8 cm². Determine its number of turns.

A

1.01 × 10⁶ turns

B

1.01 × 10⁹ turns

C

1.01 × 10⁴ turns

D

1.01 × 10³ turns

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