B.Sc 3rd year AP-2363-09 To draw the B-H curve for a ferro-megnatic material (a thin rod of soft iron) with the help of cathode ray oscilloscope and hence to determine the residual magnetism, coercive

B.Sc IIIrd year Apparatus : Cathode ray oscilloscope, step down transformer of 6-12 volt, experimental thin rod of soft iron, a.c. ammeter, rheostat, one resistor of 1Ω, a resistance of 4.7kΩ, a variable resistance of 5kΩ, a condenser of 2uF and a condenser of 1uF, a hollow glass tube of length nearly 30 cm and diameter 3 cm with primary coil of insulated thin copper wire wound over it and a secondary coil of nearly 10,000 turns wound on 10 cm length in its middle, screw guage, connection wires.