A very long, thin, and flat conductor has a uniform current density K per unit width, flowing in the direction of the long axis of the conductor. The total width of the conductor is w and, thus, the total current is

hello your question is incomplete attached below is the complete question

B =

Explanation:

I = Kw

attached below is the detailed solution of the given question

Applying Ampere law across the path

2Bw = Kw

B( magnetic field ) =

My answer is opptionc, just check with anyone else

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction