Magnetic compass needle will be deflecting if it is kept near________________? A. Static charge B. Soft iron C. Semi-conductorD. Accelerating charge

A.C can not be used for_______________? A. producing heat B. producing lightC. Magnetizing iron D. Producing magnetic field

A small coil lies inside a large coil. The two coils are horizontal concentric and carry currents in opposite directions. The large coil will experience______________? A. A torque about horizontal axis B. A torque about vertical axis C. An upward…

The emf induced in a conductor of unit length moving with unit velocity at right angles to a magnetic field is equal to_____________? A. Magnetic flux density B. Torque C. Mutual induction D. Motional emf

The emf induced in a coil by a changing magnetic flux may have unit as______________? A. ms-1A B. ms-2A-1 C. kgms2A-1D. kgm2s-1A-1

Power loss in actual transformer is due to_________________? A. Small outputB. Eddy currents and magnetic hysterias C. Soft iron core D. Back emf

A.C and D.C have the same______________? A. effect in charging a capacitor B. effect in charging a battery C. effect while passing through an inductanceD. heating effect through a resistance

Which of the following uses electric energy and does not convert it into any other form ? A. transformer B. motor C. D.C generator D. A.C generator

Inductors acts as a short circuit for_______________? A. ACB. DC C. Both A and B D. none of these

If the coil is wound on an iron core the flux through it will_______________? A. decrease B. become zero C. remain the sameD. increase