Self inductance is a property of a circuit that describes the ability of the circuit to produce an induced voltage in itself when the current through it changes. It is represented by the symbol L and is measured in units of henries (H).
Self inductance refers to the ability of a circuit to create an induced voltage in itself, while mutual inductance refers to the ability of two separate circuits to create an induced voltage in each other. Self inductance is caused by the changing current in the same circuit, while mutual inductance is caused by the changing current in a separate circuit.
The value of self inductance is affected by the number of turns in the coil, the material of the core, the shape and size of the coil, and the presence of any nearby magnetic materials. The value of self inductance can also be increased by introducing a ferromagnetic core into the coil.
Self inductance can cause a delay in the current flow through a circuit when there is a change in the voltage. This delay is due to the induced voltage in the circuit opposing the change in current. Self inductance also causes a circuit to resist changes in current, which can result in a voltage drop across the circuit.
The value of self inductance can be calculated using the formula L = NΦ/I, where N is the number of turns in the coil, Φ is the magnetic flux through the coil, and I is the current through the coil. It can also be measured using a self-inductance meter or by using an oscilloscope to measure the voltage across the coil when the current changes.