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40 The armature, frame, and core of a 12-V DC control relay are made of sheet steel. The average length of the magnetic circuit is 12 cm when the relay is energized, and the average cross section of the magnetic circuit is 0.60 cm?. The coil is wound with 250 turns and carries 50 mA. Determine a. The flux density B in the magnetic circult of the relay when the coil is energized. b. The force F exerted on the armature to close it when the col is energized.

40 The armature, frame, and core of a 12-V DC control relay are made of sheet steel. The average length of the magnetic circuit is 12 cm when the relay is energized, and the average cross section of the magnetic circuit is 0.60 cm?. The coil is wound with 250 turns and carries 50 mA. Determine a. The flux density B in the magnetic circult of the relay when the coil is energized. b. The force F exerted on the armature to close it when the col is energized.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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40 The armature, frame, and core of a 12-V DC control relay are made of sheet steel. The average length of the magnetic circuit is 12 cm when the relay is energized, and the average cross section of the magnetic circuit is 0.60 cm?. The coil is wound with 250 turns and carries 50 mA. Determine a. The flux density B in the magnetic circult of the relay when the coil is energized. b. The force F exerted on the armature to close it when the col is energized.
Transcribed Image Text:40 The armature, frame, and core of a 12-V DC control relay are made of sheet steel. The average length of the magnetic circuit is 12 cm when the relay is energized, and the average cross section of the magnetic circuit is 0.60 cm?. The coil is wound with 250 turns and carries 50 mA. Determine a. The flux density B in the magnetic circult of the relay when the coil is energized. b. The force F exerted on the armature to close it when the col is energized.
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