Homework Answers
magnetic field is straigh down.
current will be counterclockwise from top when induced magnetic is straight up.
so according to lenz law, this can happen if original magnetic flux is increasing.
now magnetic flux = magnetic field × area of loop× cos of angle between magnetic field and area vector.
so either magnetic field increase or its area ( radius of coil) increase or field is becoming perpendicular to plane of loop
so options B, D are correct
Add Answer to:
4. A coil lies flat on a tabletop in a region where the magnetic field points...
Part A A coil lies flat on a tabletop in a region where the magnetic field...
Part A A coil lies flat on a tabletop in a region where the magnetic field vector points straight up. The magnetic field vanishes suddenly. When viewed from above, what is the sense of the induced current in this coil as the field fades? a.) The induced current flows clockwise. b.) The induced current flows counterclockwise. c.) There is no induced current in this coil. d.) The current flows clockwise initially, and then it flows counterclockwise before stopping.
The drawing shows a coil of copper wire that consists of two semicircles joined by straight...
The drawing shows a coil of copper wire that consists of two
semicircles joined by straight sections of wire. In part a the coil
is lying flat on a horizontal surface. The dashed line also lies in
the plane of the horizontal surface. Starting from the orientation
in part a, the smaller semicircle rotates at an angular frequency ω
about the dashed line, until its plane becomes perpendicular to the
horizontal surface, as shown in part b. A uniform magnetic...
Part A In a region of space, a magnetic field points in the +x-direction (toward the...
Part A In a region of space, a magnetic field points in the +x-direction (toward the right). Its magnitude varies with position according to the formula B = Bo + bx, where Bo and b are positive constants, for 3 > 0. A flat coil of area A moves with uniform speed v from right to left with the plane of its area always perpendicular to this field. What is the emf induced in this coil while it is to...
The figure shows a coil entering a region (inside the dashed rectangle) where the magnetic field...
The figure shows a coil entering a region (inside the dashed rectangle) where the magnetic field B is constant. Assume B is out of the page, The maximum emf induced in the 5.00 ohm coil as it enters the field is 0.435 V The coil is connected to a 7.50 ohm resistor a)Calculate the maximum current in the coil, (b) Does the magnetic flux increase or decrease as the coil enters the region? Explain your answer. (c) What is the...
A circular coil of radius 10.5 cm is located in a region of magnetic field where...
A circular coil of radius 10.5 cm is located in a region of magnetic field where B(t) = (+0.2 T/s)t and with the magnetic field oriented perpendicular to the plane of the loop. Find the magnutide of the induced EMF in this loop at t = 11.5 s.
A current carrying loop of wire lies flat on a table top. When viewed from above,...
A current carrying loop of wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this current, outside the loop? The magnetic field: A) circles the loop in a clockwise direction. B) circles the loop in a counterclockwise direction. C) points straight up. D) points straight down. Can someone explain why the correct answer is straight down by hand...
A 50.0 cm x 35.0 cm rectangular coil of 19 turns lies in the horizontal (x-2)...
A 50.0 cm x 35.0 cm rectangular coil of 19 turns lies in the horizontal (x-2) plane with its 50.0 cm side along the +x axis and its 35.0 cm side along the +z axis. The coil is in the region of a magnetic field B = (3.50 x 10-2 T/m . s)ztj - (2.60 x 10-2 T/m)xk. (a) Determine the magnitude of the induced emf. mv (b) What is the direction of the induced emf in the coil as...
A uniform magnetic field points directly into your paper (make a sketch). A 7 turn coil...
A uniform magnetic field points directly into your paper (make a sketch). A 7 turn coil of wire with a radius of 14.2 cm lies in the plane of the paper. Over a period of 0.00035 seconds, the field is increased from 0.300 T to 1.10 T. How much emf is induced in the coil while B is changing?
A 133 turn circular coil of radius 2.07 cm is immersed in a uniform magnetic field...
A 133 turn circular coil of radius 2.07 cm is immersed in a uniform magnetic field that is perpendicular to the plane of the coil. Over an interval of 0.193 s, the magnetic field strength increases from 54.1 mT to 94.5 mT. Find the magnitude of the average emf Eavg induced in the coil during this time interval, in millivolts. Eavg = ??? mV What is the direction of the current if the axial component of the field points away...
24 A circular loop of wire is in a region of spatially uniform magnetic field directed...
24 A circular loop of wire is in a region of spatially uniform magnetic field directed into the page. Determine the direction of the induced current (as viewed from above) when the magnitude of the magnetic field is increasing. a. Clockwise b. Counterclockwise c. No current flows. 25 An electron enters a region where the uniform magnetic field strength is 4.0 T at a velocity of 4.88 x 10^m/s perpendicular to the field. Determine the radius of gyration of the...
The drawing shows a coil of copper wire that consists of two
semicircles joined by straight sections of wire. In part a the coil
is lying flat on a horizontal surface. The dashed line also lies in
the plane of the horizontal surface. Starting from the orientation
in part a, the smaller semicircle rotates at an angular frequency ω
about the dashed line, until its plane becomes perpendicular to the
horizontal surface, as shown in part b. A uniform magnetic...
Part A In a region of space, a magnetic field points in the +x-direction (toward the right). Its magnitude varies with position according to the formula B = Bo + bx, where Bo and b are positive constants, for 3 > 0. A flat coil of area A moves with uniform speed v from right to left with the plane of its area always perpendicular to this field. What is the emf induced in this coil while it is to...
The figure shows a coil entering a region (inside the dashed rectangle) where the magnetic field B is constant. Assume B is out of the page, The maximum emf induced in the 5.00 ohm coil as it enters the field is 0.435 V The coil is connected to a 7.50 ohm resistor a)Calculate the maximum current in the coil, (b) Does the magnetic flux increase or decrease as the coil enters the region? Explain your answer. (c) What is the...
A 50.0 cm x 35.0 cm rectangular coil of 19 turns lies in the horizontal (x-2) plane with its 50.0 cm side along the +x axis and its 35.0 cm side along the +z axis. The coil is in the region of a magnetic field B = (3.50 x 10-2 T/m . s)ztj - (2.60 x 10-2 T/m)xk. (a) Determine the magnitude of the induced emf. mv (b) What is the direction of the induced emf in the coil as...
A uniform magnetic field points directly into your paper (make a sketch). A 7 turn coil of wire with a radius of 14.2 cm lies in the plane of the paper. Over a period of 0.00035 seconds, the field is increased from 0.300 T to 1.10 T. How much emf is induced in the coil while B is changing?
24 A circular loop of wire is in a region of spatially uniform magnetic field directed into the page. Determine the direction of the induced current (as viewed from above) when the magnitude of the magnetic field is increasing. a. Clockwise b. Counterclockwise c. No current flows. 25 An electron enters a region where the uniform magnetic field strength is 4.0 T at a velocity of 4.88 x 10^m/s perpendicular to the field. Determine the radius of gyration of the...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago