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An air-filled toroidal solenoid has a mean radius of 15.2 cm and a cross-sectional area of...

An air-filled toroidal solenoid has a mean radius of 15.2 cm and a cross-sectional area of 5.02 cm^2. Picture this as the toroidal core around which the windings are wrapped to form the toroidal solenoid. The current flowing through it is 12.1 A, and it is desired that the energy stored within the solenoid be at least 0.389 J .

What is the least number of turns that the winding must have?

Express your answer numerically, as a whole number, to three significant figures.

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Answer #1

Inductance of toroid 2: 2. “А 2 пътеля, E = 11* 2. Т. 0:39 - L x Mo N²A 2 пеам 2 -Ч,12-) 0:39 - 1x Чп хо *хм?х 5.2 х 10 2 2 П

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