Induced EMF in a rod moving through a U shaped container
Let us consider a magnetic field acting into the paper. Let
us assume a rod of known length is moving in that field across a container with
a known velocity.
We can draw an equivalent circuit and find the EMF developed
in the circuit as shown below.
If a rod is moving with a known velocity and with an angle to
the magnetic field, we can find the magnitude of induced EMF developed in the
circuit as shown in the diagram below.
If the same rod is bent at the middle and it is moved through
with a known velocity, we can measure the induced EMF as shown in the diagram
below.
When a conductor of known length is moving in a electric
circuit with a known velocity, under the influence of the magnetic field, an
induced EMF is generated and the corresponding force and the power generated
there can be measured as shown in the diagram below.
The equation for the force and power are as shown in the
diagram below.
Motional EMF generated in a rotating rod or bar
Let us imagine a rod of known length is in a magnetic field
and it is passing current through it. Let it is rotated in the field with a
known angular velocity. Let us assume that it has turned only through a known
angle and hence some area of the sector is covered. Basing on that, we can
measure the magnetic flux and magnetic field induction and induced EMF as shown
in the diagram below.
The magnitude of the EMF generated in this process is
independent of the spokes the wheel has. In this case we are measuring the EMF
due to a wheel rotating in the magnetic field.
Related Posts
No comments:
Post a Comment