A Flat Rectangular Loop of Wire Is Placed Between the Poles

question 44

Multiple Choice

A flat rectangular loop of wire is placed between the poles of a magnet, as shown in the figure. It has dimensions w = 0.60 m and L = 1.0 m, and carries a current I = 2.0 A in the direction shown. The magnetic field due to the magnet is uniform and of magnitude 0.80 T. The loop rotates in the magnetic field and at one point the plane of the loop is parallel to the field. At that instant, what is the magnitude of the torque acting on the wire due to the magnetic field?

• A) 0.00 N ∙ m
• B) 0.40 N ∙ m
• C) 0.48 N ∙ m
• D) 0.83 N ∙ m
• E) 0.96 N ∙ m

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Definitions:

External Input

Any input signal or data received from an outside source, device, or system, which is used to influence operations or responses within a system.

Latch

An electronic circuit or mechanism that retains its output state until a specific input signal is received.

Unlatch

A term used in programmable logic control programming that refers to a command or instruction to turn off or reset a previously set (latched) condition.

Retentive Outputs

In PLC systems, retentive outputs retain their state even after the controller is powered off or resets, allowing for the continuation of processes without data loss.