A flat coil of wire is placed in a
uniform magnetic field that is in the y direction. (i) The
magnetic flux through the coil is maximum if the coil is (a) in the
xy plane(b) in either the xy or the yz plane (c) in the xz plane
(d) in any orientation, because it is constant. (ii) For
what orientation is the flux zero? Choose from the
same possibilities.
A rectangular coil with N turns and area A is place in a uniform
magnetic field directed into y-direction. (a) What amount of emf is
induced in the coil if the coil doesn’t move or rotate? . Let’s say
the coil rotates about the z-axis through its center at a constant
angular velocity LaTeX: \omegaω. (b) What would be total magnetic
flux through the coil as a function of LaTeX: \thetaθ ? (LaTeX:
\thetaθ is the angle between the directions...
A square coil of wire of side 3.00 cm is placed in a uniform magnetic
field of magnitude 1.75 T
directed into the page as in the figure shown below. The coil has
38.0 turns and a resistance of
0.780 Ω. If the coil is rotated through an angle of
90.0° about the horizontal axis shown in 0.335 s, find the
following.
(a) the magnitude of the average emf induced in
the coil during this rotation
(b) the average current...
3.12. A rectangular coil of wire is suspended in a uniform
radial magnetic field of induction 0.05 T, the field lines being
horizontal. The coil consists of 400 turns of wire each of height 2
cm and width 1 cm. If a current of 1 mA is passed through the coil,
calculate:-
(a) the force acting on unit length of the wire in one of the
vertical sides of the coil;
(b) the total force on one vertical side of...
Consider a single coil carrying a current I.
a. What are the electric and magnetic fields at the center of
the coil?
b. Now suppose the coil is moving at a speed v perpendicular to
its axis. What are the electric and magnetic fields at the center
of the coil?
c. What is the physical origin of the electric field you just
found? Where are the charges?
Create a diagram of a current-carrying wire in a magnetic field.
Draw the field lines and explain how the direction of force acting
on the wire is determined.
#- Create a sketch of the experiment Michael Faraday performed,
label all the parts, and write a brief explanation of how motion is
created.
thank you
A circular coil (830 turns, radius = 0.087 m) is rotating in a
uniform magnetic field. At t = 0 s, the normal to the coil is
perpendicular to the magnetic field. At t = 0.021 s, the normal
makes an angle of 45o with the field because the coil has made
one-eighth of a revolution. An average emf of magnitude 0.075 V is
induced in the coil. Find the magnitude of the magnetic field at
the location of the...
A 123 turn circular coil of radius 2.27 cm is immersed in a
uniform magnetic field that is perpendicular to the plane of the
coil. Over an interval of 0.167 s , the magnetic field strength
increases from 54.5 mT to 94.1 mT . Find the magnitude of the
average emf avg induced in the coil during this time interval, in
millivolts.
The magnetic field at a distance
ro from a long straight wire carrying a current
I is given by B=u0I/2PI ro . For the
statements below, circle the word or phrase that correctly
completes the sentence.
A) For
a fixed current of 3.00 A in the wire, the magnetic field sensed by
a Hall probe will _________________ if the distance
r0is changed from 0.6 cm to 1.2 cm. (double,
triple, reduce to half, reduce by 0.6 mT)
B) If the...