Which one of the following vector functions represents a magnetic field \(\vec{B}\) ? (x̂, ŷ, and ẑ are unit vectors along x-axis, y-axis and z-axis, respectively)
10x x̂ + 20y ŷ - 30z ẑ
A magnetic flux density must satisfy \(\nabla\cdot\mathbf B=0\). The divergences of the four options are respectively 10, −10, 0 and 20. Only \(\mathbf B=10x\hat x+20y\hat y-30z\hat z\) satisfies the condition.
Important Questions from Magnetostatics
In Faraday's Law application, current will be induced:
A magnetic material has a hysteresis loop area of 0.4 J for each cycle. If the material is subjected to a frequency of 40 Hz, what is the total hysteresis loss per second?
A magnet is kept in the medium of air surrounded by an iron ring. The magnetic lines of force from the magnet will be
The magnetostatics highly relies on which property?
What is the coercive magnetic force (H C) value of ceramic type of permanent magnetic material?
