Post Utme Futo 2025 Physics Question 3

Practice objective / multiple choice question 3 from the 2025 Post Utme Futo Physics examination.

Post Utme Futo 2025 Physics Objective / Multiple Choice

Question 3 POST_UTME_FUTO • 2025 • PHYSICS • objective

A magnetic field is produced by a current-carrying wire. U\sing Ampère's Law, derive an expression for the magnetic field $B$ in terms of the current $I$, the dis\tance $r$ from the wire, and the permeability of free space $\mu_0$.

A. $ B = \frac{\mu_0 I}{r} $

Correct Answer B. $ B = \frac{\mu_0 I}{2\pi r} $

C. $ B = \frac{\mu_0 I}{4\pi r} $

D. $ B = \frac{\mu_0 I}{6\pi r} $

Correct Answer

Correct Option:

$ B = \frac{\mu_0 I}{2\pi r} $

This is Post Utme Futo 2025 Physics Question 3. It is one of the objective questions from the 2025 Post Utme Futo Physics examination.

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