1. Mention two properties of soft iron due to which it is preferred for making an electromagnet.
  2. State Gauss's law in magnetism. How is it different from Gauss's law in electrostatics and why?
CBSE OUTSIDE DELHI - SET 1 SOUTH 2016
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  1. Low coercivity and high permeability.
  2. The net magnetic flux through any closed surface is zero/
$\oint\text{B}.\text{ds} = 0 $

$\oint\text{E}.\text{ds} = \frac{\text{q}}{\in_{o}}$/The net electric flux through any closed surface is $\frac{1}{\in_{o}}$ times the net charge.

which indicates magnetic monopoles do not exist/ magnetic poles always exists in pairs.
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