The Answer:
The diameter will be reduced or shorten to prevent the induced current in the metal loop
explanation:
Magnetic flux is given as
Φ = BA•Cosθ
Since the angle is kept constant.
So to have same magnetic flux with larger magnetic field required only the diameter to changed
From the equation above,
Φ = BA•Cosθ
B= Φ / A•Cosθ
Since both Flux and the angle is constant
Then, The magnetic field is inversely proportional to the Area
And the areas is a function of diameter, Area = πd²/4
So to have a larger magnetic field, we need to reduce or shorten the diameter.
As d reduces, B increases.
Magnetic lines of forces make a closed loop because there are no magnetic charges (monopoles). While electric <span>field lines end on electric charges, magnetic field lines have no objects on which they could end. This is why they must form loops. </span>
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The sum of angles in a regular pentagon is
180*(5 - 2) = 540°
Each internal angle is 540/5 = 108°.
Each vertex creates a line of symmetry to the midpoint of the opposite side,
as shown in the figure.
Answer: 5 lines of symmetry.
