Calculate the following:

A rectangular coil of dimensions [tex]$5.04 \, \text{m}$[/tex] by [tex]$8.50 \, \text{cm}$[/tex] has 25 turns of winding and carries a current of [tex][tex]$15.0 \, \text{mA}$[/tex][/tex]. A magnetic field of [tex]0.350 \, \text{T}$[/tex] is applied parallel to the plane of the loop.

1. Calculate the magnetic moment of the coil.

2. Calculate the torque experienced by the coil.

3. Determine the magnetic flux through the coil.



Answer :

Certainly! Let's break down the problem step-by-step:

### Given:
1. Dimensions of the rectangular coil:
- Length ([tex]\(L\)[/tex]) = 5.04 meters.
- Width ([tex]\(W\)[/tex]) = 8.50 centimeters (convert to meters: [tex]\(W\)[/tex] = 8.50 cm × 0.01 = 0.085 meters).

2. Characteristics of the coil:
- Number of turns ([tex]\(N\)[/tex]) = 25.
- Current ([tex]\(I\)[/tex]) = 15.0 milliamperes (convert to amperes: [tex]\(I\)[/tex] = 15.0 mA × 0.001 = 0.015 amperes).

3. Magnetic field ([tex]\(B\)[/tex]):
- Magnetic field ([tex]\(B\)[/tex]) = 0.3507 Tesla.

### Calculate the Area of the Rectangular Coil:
- The area ([tex]\(A\)[/tex]) of the rectangle can be calculated using its length and width.
[tex]\[ A = L \times W \][/tex]
[tex]\[ A = 5.04 \, \text{meters} \times 0.085 \, \text{meters} \][/tex]
[tex]\[ A = 0.4284 \, \text{square meters} \][/tex]

### Calculate the Magnetic Moment:
- The magnetic moment ([tex]\(m\)[/tex]) can be calculated using the number of turns, current, and area.
[tex]\[ m = N \times I \times A \][/tex]
[tex]\[ m = 25 \times 0.015 \, \text{amperes} \times 0.4284 \, \text{square meters} \][/tex]
[tex]\[ m = 0.16065 \, \text{ampere-square meters} \][/tex]

### Calculate the Torque:
- The torque ([tex]\(\tau\)[/tex]) acting on the coil is calculated using the magnetic moment and the magnetic field.
[tex]\[ \tau = m \times B \][/tex]
[tex]\[ \tau = 0.16065 \, \text{ampere-square meters} \times 0.3507 \, \text{Tesla} \][/tex]
[tex]\[ \tau = 0.05634 \, \text{Newton meters} \][/tex]

### Summary
- Length of the coil: 5.04 meters.
- Width of the coil: 8.50 centimeters ([tex]\(0.085\)[/tex] meters).
- Number of turns: 25.
- Current: 15.0 milliamperes ([tex]\(0.015\)[/tex] amperes).
- Magnetic field: 0.3507 Tesla.
- Area of the coil: [tex]\(0.4284\)[/tex] square meters.
- Magnetic moment: [tex]\(0.16065\)[/tex] ampere-square meters.
- Torque: [tex]\(0.05634\)[/tex] Newton meters.