neet prep High Yielding Test Series Part Test 6 magnetising

Last updated: 6/9/2023

neet prep High Yielding Test Series Part Test 6 magnetising fields Following graph has been plotted for 1 200 V B versus H Choose the wrong statement 2 100 V 3 50 V Contact Number 9667591930 8527521718 1 There is a limit of direct and reverse external magnetising field at which the magnetisation and hence the magnetic induction saturates 2 Even after removing the external magnetising field some residual magnetisation called retentivity is left over in the substance 3 On increasing the reverse magnetising field the magnetic field decreases to zero for a value of 4 150 V 167 A horizontal straight wire 10 m long extending from east to west is falling with a speed of 5 0 ms at right angle to the horizontal component of the earth s magnetic field 0 30 10 4 Wb m2 The instantaneous value of the emf induced in the wire is 1 2 5 10 v 2 1 5 10 4 V 3 2 5 10 4 V 4 1 5 10 v