Post Utme Futo 2018 Physics Question 9

Practice objective / multiple choice question 9 from the 2018 Post Utme Futo Physics examination.

Post Utme Futo 2018 Physics Objective / Multiple Choice
Question 9 POST_UTME_FUTO • 2018 • PHYSICS • objective
Post Utme Futo 2018 Physics Question 9 diagram

A magnetic field is produced by a current-carrying wire. The magnetic field at a dis\tance $r$ from the wire is given by $B(r) = \frac{\mu_0 I}{2\pi r}$. What is the direction of the magnetic field at a dis\tance $r$ from the wire?

Answer Options

Correct Answer A. \hat{\phi}
B. -\hat{\phi}
C. \hat{r}
D. -\hat{r}
Correct Answer
A
Correct Option:
\hat{\phi}

About This Question

This is Post Utme Futo 2018 Physics Question 9. It is one of the objective questions from the 2018 Post Utme Futo Physics examination.

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