1.

A loop is kept so that its center lies at the origin of the pointing along Z -axis as shown in the figure

Answer»

No emf and current will be INDUCED in the loop if it ROTATES about Z-axis
emf is induced but no current flows if the loop is a fiber when it rotates about y-axis.
emf is induced and induced current flows in the loop if the loop is made of copper & is ROTATED about y -axis
If the loop moves along Z axis with constant velocity no current flows in it.

Solution :If the loop rotates about Z axis the variation of flux LINKAGE will be zero. Therefore no emf is induced. Consequently no current flows in the loop
When it rotates about y axis its flux linkage CHANGES . However in insulators there can not be motional emf.
If the loop is made of copper , it is conductive therefore induced current is set up. If the loop moves along the Z axis variation of flux linkage is zero . Therefore the emf and current will be equal to zero.


Discussion

No Comment Found

Related InterviewSolutions