Question
Physics Question on Magnetic properties of materials
Soft iron is preferred as the core of transformers due to its :
A
low coercivity and low retentivity
B
low coercivity and high retentivity
C
high coercivity and high retentivity
D
high coercivity and low retentivity
Answer
high coercivity and low retentivity
Explanation
Solution
The core of a transformer is made of soft iron because it has high permeability so it provides complete linkage of magnetic flux of the primary coil to the secondary coil. Therefore ithas high coercivity and low retentivity.