Answer to Question #244581 in Electricity and Magnetism for Cleopatra

Question

1.what is the relationship between number of windings in the solenoid and the deflection of the galvanometer needle?

Answer 1

With a higher number of turns, the coil length is longer, and thus the material used to carry the current is more dense, and thus the magnetic field is more powerful because additional current is flowing through the solenoid due to the more turns. The galvanometer deflection is proportional to the current flowing through the coil. This means that can increase in the number of windings the bigger the deflection in the galvanometer and vice versa