What is the strength of the magnetic field a distance of 1 meter from a wire carrying a current of 1 A?
B=MoI
------
2(pi)r
Mo=4(pi)x 10^-7
I=1 A
How do I know what r is?
r=1meter
To know the value of 'r', you need information about the wire's shape and position in space. If the wire is a straight conductor, you can directly measure the distance from the wire to the point where you want to determine the magnetic field strength.
However, if the wire is not straight, you will need additional information such as the coordinates or equations that describe the wire's shape. In this case, you would need to determine the distance from the wire to the point of interest using geometry or mathematical calculations.
If you have a specific wire configuration in mind, please provide more details so that I can assist you in determining the value of 'r' accurately.