Question

The magnetic field outside a long straight current-carrying wire depends on the distance R

from the wire axis according to:
A. R
B. 1/R
C. 1/R^2
D. 1/R^3
E. 1/R^3/2

Answer 1

The magnetic field outside a long straight current-carrying wire depends on the distance from the wire axis according to 1/R. This means that the magnetic field strength decreases as the distance from the wire increases.

Step-by-step explanation:

The magnetic field outside a long straight current-carrying wire depends on the distance R from the wire axis according to 1/R.

This means that the magnetic field strength decreases as the distance from the wire increases. As you move further away from the wire, the magnetic field becomes weaker.

For example, if you have two points A and B, with A being closer to the wire than B, the magnetic field at point A would be stronger than at point B.