and current II Motional emf v Bul e 2 DWD at right angles to

Last updated: 6/11/2023

and current II Motional emf v Bul e 2 DWD at right angles to the horizontal Example 16 A horizontal straight wire 10 m long extending from east to west is falling with a speed of 5 0 m s component of earth s magnetic field equal to 0 30 x 10 4 Wb m 2 a What is the instantaneous value of the emf induced in the wire What is the direction of emf c Which end of the wire is at the higher electrical potential Solution a Instantaneous emfe BH vl Given BH 0 30 x 10 NCERT Problem 6 7 Tu 5 0 ms 1 10 m e 0 30 x 104 x 50 x 10 1 5 x 103 V 1 5 mV b By Fleming s right hand rule the direction of induced current in the wire will be from west to east therefore direction of emf will be from west to east c The direction of electron flow will be from east to west The induced emf will oppose the flow of electrons from east to west so eastern end will be at a high otential int of earth s magnetic field be