what are two properties that lead to electromagnetic interactions? pls help I'm so confused and cant find the answer anywhere!!
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Ответ:
Electric charge. A fundamental property that leads to the electromagnetic interactions among particles that make up matter.
Ответ:
0.0081T
Explanation:
The magnetic field B in the toroid is proportional to the applied current I and the number of turns N per unit length L of the toroid. i.e
B ∝ I![\frac{N}{L}](/tpl/images/0716/4096/a3623.png)
B = μ₀ I
----------------(i)
Where;
μ₀ = constant of proportionality called the magnetic constant = 4π x 10⁻⁷N/A²
Since the radius (r = 4.2cm = 0.042m) of the toroid is given, the length L is the circumference of the toroid given by
L = 2π r
L = 2π (0.042)
L = 0.084π
The number of turns N = 1000
The current in the toroid = 1.7A
Substitute these values into equation (i) to get the magnetic field as follows;
B = 4π x 10⁻⁷ x 1.7 x
[cancel out the πs and solve]
B = 0.0081T
The magnetic field along the central radius is 0.0081T