Solution: The magnetic field created by a long straight wire carrying a current iA) decreases by a factor of four as the distance doubles.B) increases by a factor of four as the distance doubles.C) remains unchanged as the distance doubles.D) decreases by a factor of two as the distance doubles.E) increases by a factor of two as the distance doubles.

Problem

The magnetic field created by a long straight wire carrying a current i

A) decreases by a factor of four as the distance doubles.

B) increases by a factor of four as the distance doubles.

C) remains unchanged as the distance doubles.

D) decreases by a factor of two as the distance doubles.

E) increases by a factor of two as the distance doubles.