A wire along the z axis carries a current of 4.9 A in the z direction Find the magnitude and direction of the force exerted on a

Question

vekshin1

1 month ago

6

A wire along the z axis carries a current of 4.9 A in the z direction Find the magnitude and direction of the force exerted on a

3.3 cm long length of this wire by a uniform magnetic field pointing in the x direction having a magnitude 0.43T

Physics

1 answer:

ValentinkaMS [3.4K] · Answer 1 · 2026-03-29T22:08:17+03:00

Response:

0.069 N, directed along the X axis

Reasoning:

Flemming’s left hand rule indicates that when the left hand's first three fingers are held at right angles to each other, the index finger denotes the direction of the magnetic field, the middle finger indicates the current's direction, and the thumb shows the force's direction.

The mathematical expression of the principle is

F= BIL

provided values

Magnetic field B= 0.43T

Current I= 4.9 A

length of conductor L= 3.3 cm, converting to meters: 3.3/100= 0.033 m

Using the formula, the force is computed as

F= 0.43*4.9* 0.033= 0.069 N

According to Flemming's rule, since all elements are perpendicular, the force acts in the X direction