JEE Main 20205 Sep, Evening shiftPhysicsMediumMagnetic Effects of Current and Magnetism165× since 2002
An iron rod of volume 10^–3 m³ and relative
permeability 1000 is placed as core in a
solenoid with 10 turns/cm. If a current of 0.5 A
is passed through the solenoid, then the
magnetic moment of the rod will be :