Mutual Inductance is
the interaction of one coils magnetic field on another coil
as it induces a voltage in the adjacent coil. In the previous tutorial we saw that an inductor generates an induced emf within itself as a result of the changing magnetic field around its own turns.
What causes mutual inductance in a coil?
When an emf is produced in a coil because of the change in current in a coupled coil
, the effect is called mutual inductance. The emf is described by Faraday’s law and it’s direction is always opposed the change in the magnetic field produced in it by the coupled coil (Lenz’s law ).
What is mutual and self inductance?
Self inductance is the characteristic of the coil itself
. Mutual inductance is the characteristic of a pair of coils. The induced current opposes the decay of current in the coil when the main current in the coil decreases.
Does mutual inductance depends on current?
What is the mutual inductance between the two loops? The result shows that M depends only on
the geometrical factors, 1 R and 2 R
, and is independent of the current 1 I in the coil. particular, an inductor is a circuit element (symbol ) which has a large self- inductance.
What is mutual inductance explain?
Mutual Inductance is
the basic operating principal of the transformer, motors, generators and any other electrical component that interacts with another magnetic field
. Then we can define mutual induction as the current flowing in one coil that induces a voltage in an adjacent coil.
What is inductor formula?
V
T
= V
1
+ V
2
+V
3
. We know that the voltage across an inductor is given by the equation.
V = L di / dt
.
How do you calculate inductance of a coil?
The formula is: The micro henrys of inductance in
a coil = (N^2)(D^2)/(18D + 40L)
where “N” equals the number of rings in the coil, “D” equals the diameter of the coil and “L” equals the length of the coil.
How do you increase the inductance of a coil?
As well as increasing the number of coil turns, we can also increase inductance
by increasing the coils diameter or making the core longer
. In both cases more wire is required to construct the coil and therefore, more lines of force exists to produce the required back emf.
Does inductance increase with current?
Generally, B can get saturated, so with increasing current and therefore increasing H the permeability and hence the
inductance decreases
.
Does mutual inductance depends on geometry of coil?
Answer: As with mutual inductance, the induced emf is proportional to the change in current. The induced emf can be written as: The constant L is known as the inductance of the coil. It depends on
the coil geometry
, as well as on whether the coil has a core of ferromagnetic material.
Does inductance change with current?
The
current in an inductor cannot change instantaneously
because it implies an infinite voltage will exist, which isn’t going to happen. This reluctance to change is because of the energy stored in the inductor’s magnetic field. The current in an inductor does not (will not) change instantaneously.
Why do we use mutual inductance?
Mutual inductance, M, is the
property whereby an e.m.f. is induced in a circuit by a change of flux due to current changing in an adjacent circuit
. A transformer is a device which uses the phenomenon of mutual induction to change the values of alternating voltages and currents.
What is called self inductance?
Self inductance is defined as
the induction of a voltage in a current-carrying wire when the current in the wire itself is changing
. In the case of self-inductance, the magnetic field created by a changing current in the circuit itself induces a voltage in the same circuit.
How mutual inductance is calculated?
The mutual inductance M21 of coil 2 with respect to coil 1 is the
ratio of the flux through the N2 turns of coil 2 produced by the magnetic field of the current in coil 1
, divided by that current, that is, M21=N2Φ21I1. M12=N1Φ12I2. M=N2Φ21I1=N1Φ12I2.
What is the basic principle of inductor?
An inductor is a passive electronic component which is
capable of storing electrical energy in the form of magnetic energy
. Basically, it uses a conductor that is wound into a coil, and when electricity flows into the coil from the left to the right, this will generate a magnetic field in the clockwise direction.
What is inductor in simple words?
An inductor, also called
a coil, choke, or reactor
, is a passive two-terminal electrical component that stores energy in a magnetic field when electric current flows through it. An inductor typically consists of an insulated wire wound into a coil.
