List the observations based on a series of experiments carried out by Faraday and Henry, on
Electromagnetic Induction.
Answers
Answer:
Faraday's magnetic induction experiment.
When the switch S is closed in the primary circuit, a momentary current flows in the secondary circuit, giving a transient deflection of the compass needle M
Explanation:
Faraday’s discovery of electric induction
Faraday, succeeded by using two coils of wire wound around opposite sides of a ring of soft iron . The first coil was attached to a battery; when a current passed through the coil, the iron ring became magnetized. A wire from the second coil was extended to a compass needle a metre away, far enough so that it was not affected directly by any current in the first circuit. When the first circuit was turned on, Faraday observed a momentary deflection of the compass needle and its immediate return to its original position. When the primary current was switched off, a similar deflection of the compass needle occurred but in the opposite direction.
Building on this observation in other experiments, Faraday showed that changes in the magnetic field around the first coil are responsible for inducing the current in the second coil. He also demonstrated that an electric current can be induced by moving a magnet, by turning an electromagnet on and off, and even by moving an electric wire in Earth’s magnetic field. Within a few months, Faraday built the first, electric generator.
