Question

A long, straight wire carrying a current of 245 A is placed in a uniform magnetic field that has a magnitude of 6.40 10-3 T. The wire is perpendicular to the field. Find a point in space where the net magnetic field is zero. Locate this point by specifying its perpendicular distance from the wire.

Answer 1

0.076 m

Step-by-step explanation:

Given,

Current in the wire,I = 245 A

Magnetic field, B = 6.40 x 10⁻³ T

perpendicular distance,r = ?

Using magnetic field formula

`B=(\mu_0 I)/(2\pi r)`

`r=(\mu_0 NI)/(2\pi B)`

`r=(4\pi* 10^(-7)* 245)/(2\pi * 6.40 * 10^(-3))`

r = 0.076 m

Hence, Perpendicular distance from the wire is equal to 0.076 m