Torque: a Rectangular Loop of Wire Carrying a 4

question 35

Multiple Choice

Torque: A rectangular loop of wire carrying a 4.0-A current is placed in a magnetic field of 0.60 T. The magnitude of the torque acting on this wire when the plane of the loop makes a 30° angle with the field is measured to be 1.1 N ∙ m. What is the area of this loop?

• A) 0.20 m²
• B) 0.40 m²
• C) 0.26 m²
• D) 0.80 m²
• E) 0.53 m²

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Definitions:

Motor Starter

A device that controls the use of electrical power to equipment, specifically to an electric motor, by means of protection and control circuitry.

No-voltage Drop-out

A safety feature in electrical devices that causes them to automatically switch off in the event of a voltage reduction or loss, preventing damage or unsafe conditions.

Two-wire Control

A simplified control circuit configuration that uses two wires for operation, commonly applied in direct ON/OFF control scenarios.

Mechanically Held

Refers to devices or components held in position or operated by mechanical means rather than by electrical power or magnetism.