Question

You’re on a team performing a high-magnetic-field experiment. A conducting bar carrying 4.1 kA will pass through a 1.3-m-long region containing a 12-T magnetic field, making a 60° angle with the field. A colleague proposes resting the bar on wooden blocks. You argue that it will have to be clamped in place, and to back up your argument you claim that the magnetic force will exceed 10,000 pounds. Are you right?

Answer 1

Answer:

Yes we are right as the force on wire is approx 12500 Lb

Explanation:

Magnetic force on a current carrying bar is given by the equation

$\vec F = i(\vec L \times \vec B)$

here we know that

L = 1.3 m

B = 12 T

$\theta = 60^0$

i = 4.1 kA

now from above formula we have

$F = iLBsin60$

$F = (4.1\times 10^3)(1.3 )(12)sin60$

$F = 55391 N$

So this is equivalent to 12500 Lb force