Using Faraday’s Law and Lenz’s Law, explain why a change of
current in a conducting wire...
Using Faraday’s Law and Lenz’s Law, explain why a change of
current in a conducting wire loop will induce an electrical
potential difference which will oppose this change. Use relevant
equations and/or diagram(s).
An infinite straight wire carries current I1 = 5.8 A in the positive y-direction as shown. At time t = 0, a conducting wire, aligned with the y-direction is located a distance d = 51 cm from the y-axis and moves with velocity v = 19 cm/s in the negative x-direction as shown. The wire has length W = 24 cm.1) What is ε(0), the emf induced in the moving wire at t = 0? Define the emf to be...
A transformer is a device that takes advantage of Faraday’s Law
to change an AC voltage. It consists of a primary
coil and a secondary coil. When a transformer is
used to raise the voltage, it is called step-up transformer and
when used to lower the voltage, it is called a step-down
transformer. As in the case of nested coils discussed in the
Pre-Lab Notes, the secondary coil has a varying magnetic field in
its center due to the varying...
1. Faraday’s law of electromagnetic induction is a law that
states that when the magnetic flux linking a circuit changes, an
electromotive force is induced in the circuit proportional to the
rate of change of the flux linkage.
Please click the link:
https://phet.colorado.edu/sims/html/faradays-law/latest/faradays-law_en.html
And observe the fluctuation of induced current in the circuit by
moving the magnet.
Explain each of them in 10 lines:
1-Faraday’s Law of Induction and relevance
2- Direct and Alternating Current Generators
3- Lenz’s Law and the differences with Faraday’s Law
4- the process of Inducing Voltage by Moving a Wire in a
Magnetic Field
A long horizontal conducting wire carries current due east. It
is place into very strong magnetic field and as result it
levitates. What is direction of magnetic field?
a. North
b. South
c. Up
d. Down
e. East
f. West
Which of these statements best describes the significance of the
negative sign in Faraday’s Law?
A) The voltage produced tires to keep the magnetic flux
constant.
B) The current always flows backwards.
C) Magnetic fields point from North to South.
D) All of these statements are pretty good descriptions.
a. Use Faraday’s Law to derive the expression for the induced
EMF for an ordinary slide generator, being careful to explain the
steps, like on an exam.
b. Use that to estimate the EMF generated across the wingspan
of an airplane flying toward Minnesota. Use the same 55.66 μT
pointed 70 degrees downward.
The wing span is 35.78 meters and cruising speed is 907
km/h.
c. First conceptual question. There is obviously not a circuit
or a current for a...
Write the Faraday’s Law. mathematical expressions (integral form
only). Explain each symbol, each detail in each of these equations
– by words. Draw sketches when they are necessary for your
explanation.
What is Faraday’s Law? What two things does it
relate?
What is Lenz’s Law? What does it conserve?
In the early 1830’s physicist Michael Faraday discovered
magnetic induction. In his experiment, emf was induced in a coil of
wire by a bar magnet. What did Faraday observe when the magnet is
at rest and when it is moving?