Class 12 Physics Study materials – Free Download

Class 12 students can download study materials in Physics here. The materials are prepared by experts in the field and can be used for first time study or  for a quick revision. Electrostatics Current Electricity Magnetic Effect of Current and Magnetism Electromagnetic induction and AC Electromagnetic Waves Optics Dual Nature of matter and energy Atoms [...]

Problem based on electromagnetic induction – motional emf

A horizontal straight wire 10 m long extending from east to west is falling with a speed of 5.0 m s–1, at right angles to the horizontal component of the earth’s magnetic field, 0.30 × 10–4 Wb m–2. (a) What is the instantaneous value of the emf induced in the wire? (b) What is the direction [...]