ANalysis 

• Define magnetic susceptibility. (2019, 2022)
  
  

• Define magnetic permeability. (2020, 2023)
  
  

• Define retentivity. (2021)
  
  

• Define coercivity. (Repeated)
  
  

• Define hysteresis. (Repeated) 

• Classify magnetic materials. (2018, 2022)
  
  

• Distinguish between diamagnetic, paramagnetic and ferromagnetic materials. (Repeated)
  
  

• Explain hysteresis curve. (2020, 2023) 

• Explain hysteresis loop and its significance. (2019, 2022)
  
  

• Explain properties of ferromagnetic materials. (2021)
  
  

• Explain magnetic domains theory. (2020, 2023) 

• Explain hysteresis loop with neat diagram and applications. (Repeated)
  
  

• Compare soft iron and steel using hysteresis curve. (2018, 2021, 2024) 

1. Calculation involving magnetic susceptibility.
   
   

2. Relation between B, H and magnetization.
   
   

3. Magnetic permeability calculation.
   
   

4. Conversion between susceptibility and permeability. 

(Numericals are fewer in this chapter; mostly theory-based, but some formula-based questions appear.) 

✅ Hysteresis loop explanation 

✅ Magnetic material classification

✅ Soft iron vs steel comparison

✅ Susceptibility & permeability relations

✅ Domain theory explanation