Post Utme Greenfield University 2021 Physics Question 7

Practice objective / multiple choice question 7 from the 2021 Post Utme Greenfield University Physics examination.

Post Utme Greenfield University 2021 Physics Objective / Multiple Choice
Question 7 POST_UTME_GREENFIELD_UNIVERSITY • 2021 • PHYSICS • objective

A magnetic field is produced by a current-carrying wire. If the current is $I$ and the wire has a radius of $r$, what is the magnitude of the magnetic field at a dis\tance $x$ from the wire?

Answer Options

Correct Answer A. \( B = \frac{mu_0 I}{2 pi x} \)
B. \( B = \frac{mu_0 I x}{2 pi r^2} \)
C. \( B = \frac{mu_0 I r^2}{2 pi x^2} \)
D. \( B = \frac{mu_0 I x^2}{2 pi r^2} \)
Correct Answer
A
Correct Option:
\( B = \frac{mu_0 I}{2 pi x} \)

About This Question

This is Post Utme Greenfield University 2021 Physics Question 7. It is one of the objective questions from the 2021 Post Utme Greenfield University Physics examination.

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