A Point Charge Q Moves on the X-Axis in the Positive

question 41

Multiple Choice

A point charge Q moves on the x-axis in the positive direction with a speed of 280 m/s. A point P is on the y-axis at y = +70 mm. The magnetic field produced at the point P, as the charge moves through the origin, is equal to What is the charge Q? (μ₀ = 4π × 10^-7 T ∙ m/A)

• A) -53 μC
• B) +53 μC
• C) -39 μC
• D) +39 μC
• E) +26 μC

---

Definitions:

Adequacy of Consideration

Refers to a legal assessment of whether the consideration (value) given in exchange for a promise or for performance in a contract is fair and reasonable.

Unilateral Contract

A contract where only one party makes a promise or undertakes a performance without requiring a reciprocal agreement from the other party.

Consideration

In contract law, consideration refers to something of value exchanged between parties, forming the basis for a contract.

Promissory Estoppel

A rule in law that prohibits an individual from retracting a pledge given to another if the latter has justifiably depended on this assurance to their harm.