A Flat Rectangular Loop of Wire Is Placed Between the Poles

question 70

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 perpendicular 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

---

Definitions:

Nominal Consideration

A token amount in a contract to indicate that a deal has been agreed upon, even if the sum is not reflective of the contract's true value.

Love And Affection

Love and Affection, in legal terms, sometimes appears as a form of consideration in personal contracts, though it is not typically recognized as a valid form of consideration in commercial contracts.

Past Consideration

A benefit or value provided or promised in the past, which cannot be considered valid consideration for a current contract under common law.

Past Consideration

A legal concept indicating that an act done before a contract is made is not valid consideration for the contract.