A Flat Circular Coil of Wire Having 200 Turns and Diameter

question 55

Multiple Choice

A flat circular coil of wire having 200 turns and diameter 6.0 cm carries a current of 7.0 A. It is placed in a magnetic field of $0.60 \mathrm {~T}$ with the plane of the coil making an angle of 30° with the magnetic field. What is the magnitude of the magnetic torque on the coil?

• A) 2.1 N ∙ m
• B) 1.2 N ∙ m
• C) 3.9 N ∙ m
• D) 5.4 N ∙ m
• E) 1.0 N ∙ m

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Definitions:

Preventive Maintenance

Scheduled maintenance activities designed to prevent equipment failures before they occur.

I/O Field Devices

Input/Output devices located in the field of an automated system that directly interact with the physical process, such as sensors and actuators.

Output Module Fuse

A safety device in an output module of a PLC or control system designed to protect the module and connected devices from overcurrent by breaking the circuit if the current exceeds a certain threshold.

Output Device

Any connected equipment that will receive information or instructions from the central processing unit, such as control devices (e.g., motors, solenoids, alarms) or peripheral devices (e.g., line printers, disk drives, displays). Each type of output device has a unique interface to the processor.