Lenz's Law with Switch being open and closed
http://session.masteringphysics.com/problemAsset/1261825/1/YF-29-17.jpg
Part A: Using Lenz's law, determine the direction of the current in resistor ab of the figure when switch S is opened after having been closed for severalminutes.
1) from point a to point b
2) from point b to point a
Part B: Using Lenz's law, determine the direction of the current in resistor ab of the figure when coil B is brought closer to coil A with the switch closed.
1) from point a to point b
2) from point b to point a
Part C: Using Lenz's law, determine the direction of the current in resistor ab of the figure when the resistance of R is decreased while the switch remainsclosed.
1) from point a to point b
2) from point b to point a
Homework Answers
the switch is opened the magnetic field of coil A goes away. Hence by Lenz's law the field of the current induced
in coil B is to the right, to oppose the decrease in the flux in this direction. To produce magnetic field that is to the
right the current in the circuit with coil B must flow through the resistor in the direction a to b. 29-4 Chapter 29
(b) With the switch closed the magnetic field of coil A is to the right at the location of coil B. This field is stronger
at points closer to coil A so when coil B is brought closer the flux through coil B increases. By Lenz's law the field
of the induced current in coil B is to the left, to oppose the increase in flux to the right. To produce magnetic field
that is to the left the current in the circuit with coil B must flow through the resistor in the direction b to a.
(c) With the switch closed the magnetic field of coil A is to the right at the location of coil B. The current in the
circuit that includes coil A increases when R is decreased and the magnetic field of coil A increases when the
current through the coil increases. By Lenz's law the field of the induced current in coil B is to the left, to oppose
the increase in flux to the right. To produce magnetic field that is to the left the current in the circuit with coil B
must flow through the resistor in the direction b to a.
EMF in coil
A flat, rectangular coil of dimensions l and w is pulled with uniform speed v through a uniform magnetic field B with the plane of its area perpendicular to the field(the figure ).http://session.masteringphysics.com/problemAsset/1261822/1/YF-29-14.jpgPart A: Find the emf induced in this coil.Part B: If the speed and magnetic field are both tripled, what is the induced emf?
To practice Tactics Box 25.1Using Lenz's law. Lenz's law is a useful rule for determining...
To practice Tactics Box 25.1
Using Lenz's law. Lenz's law is a useful rule for determining the
direction of the induced current in a loop. Specifically, it says
that there is an induced current in a closed conducting loop if and
only if the magnetic flux through the loop is changing. The
direction of the induced current is such that the induced magnetic
field opposes the change in the flux. The following Tactics Box
summarizes the essential steps in using...
In the following figure, determine the direction of the current in resistor ab: A) As switch...
In the following figure, determine the direction of the current
in resistor ab:
A) As switch S is closed. B) As coil B is moved away from coil A
with the switch closed; C) As the resistance of R is increased
while the switch remains closed
A circular loop of wire with radius R, is in a region of
spatially uniform magnet field as shown below. The magnetic field
is directed into the plane of the figure.
Calculate the direction...
The switch on the electromagnet, initially open, is closed. What is the direction of the induced...
The switch on the electromagnet, initially open, is closed. What is the direction of the induced current in the wire loop (as seen from the left)? There is no induced current The induced current is clockwise. The induced current is counterclockwise. Submit Request Answer In this problem, you will use Lenz's law to explore what happens when an electromagnet is activated a short distance from a wire loop. You will need to use the right-hand rule to find the direction...
In this problem, you will use Lenz's law to explore what happenswhen an electromagnet is activated...
In this problem, you will use Lenz's law to explore what
happenswhen an electromagnet is activated a short distance from a
wireloop.
You will need to use the right-hand rule to find the
directionof the induced current.
Part A
When the switch is open, which of
thefollowing statements about the magnetic flux through the wire
loopis true? Assume that the direction of the vector area of the
wireloop is to the right.
There is
nomagnetic flux through the wire loop....
equipotential surfaces
A given system has the equipotential surfaces shown in the figure .Here is a link:http://session.masteringphysics.com/problemAsset/1122530/1/Walker.20.39.jpgA)What is the magnitude of the electric field?E=___ V/mB)What is the direction of the electric field?θ=____ degrees from the +x axisC)What is the shortest distance one can move to undergo a change in potential of 2.50 V?d=____mm
In (Figure 1), R = 16.0 2 and the battery emf is 6.30 V. With switch S2 open, switch S1 is closed. After several minutes, S1 is opened and S2 is closed.
In (Figure 1), R = 16.0 2 and the battery emf is 6.30 V. With switch S2 open, switch S1 is closed. After several minutes, S1 is opened and S2 is closed. Part A At 2.50 ms after S1 is opened, the current has decayed to 0.290 A. Calculate the inductance of the coil. Part BHow long after S1 is opened will the current reach 1.00% of its original value?
When the switch is open, which of the following statements about the magnetic flux through the...
In this problem, you will use Lenz's law to explore what happens when an electromagnet is activated a short distance from a wire loop. You will need to use the right-hand rule to find the direction of the induced current. When the switch is open, which of the following statements about the magnetic flux through the wire loop is true? Assume that the direction of the vector area of the wire loop is to the right. There is no magnetic...
In the circuit shown in (Figure 1) switch Si has been closed a long time while switch S2 has been left open. Then S2 is closed at the same instant when S1 is opened.
In the circuit shown in (Figure 1) switch Si has been closed a long time while switch S2 has been left open. Then S2 is closed at the same instant when S1 is opened.Part A Just after S2 is closed, the current through the resistor is 12.0 A and its rate of decrease is di/dt = 36.0 A/s. How long does it take the current to decrease to Figure 1 of 1 6.00 A, one-half its initial value?
To practice Tactics Box 25.1
Using Lenz's law. Lenz's law is a useful rule for determining the
direction of the induced current in a loop. Specifically, it says
that there is an induced current in a closed conducting loop if and
only if the magnetic flux through the loop is changing. The
direction of the induced current is such that the induced magnetic
field opposes the change in the flux. The following Tactics Box
summarizes the essential steps in using...
In the following figure, determine the direction of the current
in resistor ab:
A) As switch S is closed. B) As coil B is moved away from coil A
with the switch closed; C) As the resistance of R is increased
while the switch remains closed
A circular loop of wire with radius R, is in a region of
spatially uniform magnet field as shown below. The magnetic field
is directed into the plane of the figure.
Calculate the direction...
The switch on the electromagnet, initially open, is closed. What is the direction of the induced current in the wire loop (as seen from the left)? There is no induced current The induced current is clockwise. The induced current is counterclockwise. Submit Request Answer In this problem, you will use Lenz's law to explore what happens when an electromagnet is activated a short distance from a wire loop. You will need to use the right-hand rule to find the direction...
In this problem, you will use Lenz's law to explore what
happenswhen an electromagnet is activated a short distance from a
wireloop.
You will need to use the right-hand rule to find the
directionof the induced current.
Part A
When the switch is open, which of
thefollowing statements about the magnetic flux through the wire
loopis true? Assume that the direction of the vector area of the
wireloop is to the right.
There is
nomagnetic flux through the wire loop....
In this problem, you will use Lenz's law to explore what happens when an electromagnet is activated a short distance from a wire loop. You will need to use the right-hand rule to find the direction of the induced current. When the switch is open, which of the following statements about the magnetic flux through the wire loop is true? Assume that the direction of the vector area of the wire loop is to the right. There is no magnetic...
Most questions answered within 3 hours.
-
I was looking for help with a computer science c programming
class. not c++
This program...
asked 21 minutes ago -
Albinism is an autosomal recessive condition characterized by
absence of melanin pigment from the skin, eye...
asked 11 minutes ago -
Suppose you're looking at a physics example online, and come
across this expression in the middle...
asked 19 minutes ago -
Compile a list (7 or more) of other commands useful for
navigating or manipulating the UNIX/Linux...
asked 28 minutes ago -
How many grams of PbBr2 will precipitate when excess CrBr3
solution is added to 61.0 mL...
asked 30 minutes ago -
If I was given the address of 134.15.0.0/16 from my ISP and I
wanted to use...
asked 35 minutes ago -
What is the pH of the solution that results of dissolving 1.74g
of sodium hydroxide in...
asked 39 minutes ago -
Given a standardized normal distribution (with μ = 0 and a σ =
1), what is...
asked 1 hour ago -
Given the following information:
acetic acid
CH3COOH
Ka = 1.8×10-5
triethylamine
(C2H5)3N
Kb = 5.2×10-4
(1)...
asked 1 hour ago -
Potassium permanganate(KMNO4)is has a solubility of 6.4 g/ 100 g
of water at 20ºC, and 250...
asked 1 hour ago -
51.
As the marginal propensity to expend rises, the multiplier:
decreases.
is impossible to determine.
increases....
asked 1 hour ago -
The Baldwin Company currently has the following balances on their
balance sheet:
Total
Liabilities
$69,309
Common...
asked 1 hour ago