The Moving Coil Galvanometer The moving coil galvanometer is a fascinating apparatus used to measure the magnitude and direction of a magnetic field. This in...
The moving coil galvanometer is a fascinating apparatus used to measure the magnitude and direction of a magnetic field. This instrument employs the principle of electromagnetic induction, where a current-carrying conductor placed in a magnetic field experiences a force that causes it to move.
The moving coil is made of a thin, lightweight coil of wire suspended in a uniform magnetic field. A movable bar, called the "magnet," is placed near the coil and can be attracted or repelled by the magnetic field depending on the direction and magnitude of the field.
The coil contains a small resistance, and the induced current in the coil creates an electromotive force (EMF) in the coil itself. This EMF can be measured and used to determine the strength and direction of the magnetic field.
By varying the position of the magnet and measuring the corresponding movements of the coil, we can deduce the strength and direction of the magnetic field. This instrument provides valuable insights into the behavior of magnetic fields and their influence on electric current flow