A 0.2 kg conductor of length 0.8 m carries 2 ampere current to the right in a magnetic field. What is the magnitude and the dire

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A 0.2 kg conductor of length 0.8 m carries 2 ampere current to the right in a magnetic field. What is the magnitude and the dire

ction of the magnetic field acting on the conductor if the net force on the rod is zero? (Assume that the rod is hung by two insulating supports.)

Physics

2 answers:

Alecsey [184] · Answer 1 · 2022-02-10T02:01:42+03:00

The magnitude and the direction of the magnetic field acting on the conductor if the net force on the rod is zero is 1.225 T and upward force.

<h3>Further explanation </h3>

A 0.2 kg conductor of length 0.8 m carries 2 ampere current to the right in a magnetic field. What is the magnitude and the direction of the magnetic field acting on the conductor if the net force on the rod is zero? (Assume that the rod is hung by two insulating supports.)

$M = 0.2 kg$

$L = 0.8 m$

$g = 9.8$

$I = 2 A$

if there is no net force, the magnetic force BIL equals the weight, M g.

Therefore

$B = \frac{M g}{I L}$

$B = \frac{0.2*9.8}{2.0*0.8} = 1.225 T$

By use the right hand rule, the direction of the B field must produce an upward force.

In physics, the right-hand rule is a common mnemonic for understanding orientation of axes in 3-dimensional space. Most of the various left- and right-hand rules arise from fact that three axes of 3-dimensional space have two possible orientations

<h3>Learn more</h3>