a coil having 1000 turns and a length of 3.14cm carries a current of 5A. calculate the magnetomotive force and the magnetizing force.
To calculate the magnetomotive force (MMF) and magnetizing force, we need to use the following formulas:
1. Magnetomotive Force (MMF):
MMF = Number of turns (N) × Current (I)
2. Magnetizing Force (H):
H = MMF / Length (l)
Given:
Number of turns (N) = 1000 turns
Current (I) = 5A
Length (l) = 3.14 cm
Let's calculate the magnetomotive force (MMF) and magnetizing force (H) step by step:
Step 1: Convert the length from cm to meters:
l = 3.14 cm = 0.0314 meters
Step 2: Calculate the magnetomotive force (MMF):
MMF = N × I = 1000 turns × 5A = 5000 Amp-turns
Step 3: Calculate the magnetizing force (H):
H = MMF / l = 5000 Amp-turns / 0.0314 meters ≈ 159,235 A/m
Therefore, the magnetomotive force (MMF) is 5000 Amp-turns and the magnetizing force (H) is approximately 159,235 A/m.