UP Board Class 12 Electromagnetic Induction — practice questions
24 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice UP Board Class 12 Electromagnetic Induction in the app →A bar magnet pushed into a coil at rest causes the galvanometer needle to kick because:A copper rod of length $0.5$ m slides at $4$ m/s perpendicular to a $0.2$ T field. The motional EMF is:A coil of self inductance $0.2$ H carries $5$ A. The magnetic energy stored is:A bar magnet falling into a vertical copper tube on the lab bench drops more slowly than in free fall because:The SI unit of magnetic flux is the:The SI unit of inductance is the:Induced emf depends on the time rate of change of:The emf Blv produced by a moving conductor is called:Whose experiments led to modern generators and transformers?Lenz's law fixes which feature of the induced emf?Moving a magnet towards a coil induces in the coil an:The induced current opposes the change that produced it, because:Because the induced current opposes the motion, the mover must:The constant linking flux linkage to current is called:Inductance depends only on the coil's geometry and its:The constant M linking two neighbouring coils is called:The constant L for a single coil is called its:Mutual inductance is also called the coefficient of:An alternative name for the SI unit of magnetic flux is:Joseph Henry is credited in the text with discovering:If the induced current did not oppose the change, one could get:A galvanometer connected to a coil shows deflection only when:Flux through a coil can be changed without moving it, by changing:The negative sign in Faraday's law expresses which law?