A bar magnet having length 5 ~cm and area of cross-section 4 ~cm ² has magnetic moment 2 Am ² . If magnetic susceptibility is 5 10⁻⁶ , the magnetic intensity will be

Step-by-step solution

aligned Volume of the magnet V &= A &=5 ~cm 4 ~cm ²=20 ~cm ³ &=20 10⁻⁶ ~m ³=2 10⁻⁵ ~m ³ magnetic moment =2 & Am ² Magnetization M &= 2 10⁻⁵ 2 =10⁻⁵ ~A / m Magnetic intensity H &= M = 10⁻⁵ 5 10⁻⁶ =2 10¹⁰ ~A / m aligned