Move the arrangement rapidly towards the test coil C . (b) Replace the galvanometer by a small bulb, the kind one finds in a small torch light. The relative motion between the two coils will cause the bulb to glow and thus demonstrate the presence of an induced current. In experimental physics one must learn to innovate.
Michael Faraday who is ranked as one of the best experimentalists ever, was legendary for his innovative skills. Example . A square loop of side cm and resistance . Ω is placed vertically in the east-west plane.
A uniform magnetic field of . T is set up across the plane in the north-east direction. The magnetic field is decreased to zero in . s at a steady rate.
Determine the magnitudes of induced emf and current during this time-interval. Michael Faraday [ – ] Faraday made numerous contributions to science, viz., the discovery of electromagnetic induction, the laws of electrolysis, benzene, and the fact that the plane of polarisation is rotated in an electric field. He is also credited with the invention of the electric motor, the electric generator and the transformer. He is widely regarded as the greatest experimental scientist of the nineteenth century.