Two parallel conducting rails a distance l apart are connected at one end by a resistance R in series with battery of emf E. A conducting bar completes the circuit, joining the two rails electrically but free to slide along them. The whole circuit is perpendicular to a uniform magnetic field B, as shown in (Figure 1). The bar is initially at rest, and nothing is pulling it.
Find an expression for the initial value of the current in the circuit.
Express your answer in terms of some or all of variables B, l, E, and R.
The bar eventually reaches a constant speed. Find an expression for this speed.
Express your answer in terms of some or all of variables B, l, E, and R.
What is the current in the circuit once the bar is moving at constant speed?
Express your answer in terms of some or all of variables B, l,
E, and R.
Homework Answers
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Two parallel conducting rails a distance l apart are connected
at one end by a resistance...
A conductiong bar of mass m is place on two long conducting rails a distance l...
A conductiong bar of mass m is place on two long conducting rails a distance l apart. The rails are inclined at an angle ? with respect to the horizontal, and the bar is able to slide on the rails with negligible friction. The bar and rails are in a uniform and constant magnetic field of magnitude B oriented perpendicular to the incline. A resistor of resistance R connects the upper ends of the rails and completes the circuit as...
A conducting bar of mass m is placed on two long conducting rails
A conducting bar of mass m is placed on two long conducting rails a distance l apart. The rails are inclined at an angle theta with respect to the horizontal, andthe bar is able to slide on the rails with negligible friction. The bar and rails are in a uniform and constant magnetic field of magnitude B orientedperpendicular to the incline. A resistor of resistance R connects the upper ends of the rails and completes the circuit as shown. The...
please show work when possible so that I may better understand. Thank you. x=L The rail gun consists of two thick conducting rails connected to a power supply and there is a magnetic field ass...
please show work when possible so that I may better
understand. Thank you.
x=L The rail gun consists of two thick conducting rails connected to a power supply and there is a magnetic field assumed to be uniform and constant in the direction shown. A short conducting bar that is to be (or carry) the projectile is placed across the bars at x -0. The current flows through the bars as shown. The magnetic force on the bar causes it...
A pair of parallel conducting rails that are L = 22 cm apart lies at right...
A pair of parallel conducting rails that are L = 22 cm apart lies at right angles to a uniform magnetic field of 0.7 T directed into the page, as shown in the figure below. A R = 172 resistor is connected across the rails. A conducting bar is moved to the right at 2 m/s across the rails. B into page R L 2 m/s ♡ ♡ ♡ 1) What is the current in the resistor? (Express your answer...
Example Variation Problem 27.30 Two parallel conducting rails with negligible resistance are 50.0 cm apart and...
Example Variation Problem 27.30 Two parallel conducting rails with negligible resistance are 50.0 cm apart and are connected together at one end by an 16.8-2 resistor. A conducting bar, also with negligible resistance, is free to slide along the rails. The system is in a region where a 325-mT magnetic field points perpendicular to the plane of the rails, as shown in (Figure 1). Part A How fast should the bar be pulled in order to produce a current of...
A pair of conducting, parallel, frictionless rails is mounted on an insulating platform. The distance between...
A pair of conducting, parallel, frictionless rails is mounted on an insulating platform. The distance between the rails is L=0.30 m. A light conducting bar can slide on the rails without friction. When the conducting bar is at x = 0, the enclosed area of the loop is 0.03 m². There is zero resistance in the conducting bar or rails, the rails are connected on one end by a R=1.5 resistor. A uniform magnetic field of B -0.25 T is...
Two parallel conducting rails with negligible resistance are 50.0 cm apart and are connected together at...
Two parallel conducting rails with negligible resistance are
50.0 cm apart and are connected together at one end by an 16.8-Ω
resistor. A conducting bar, also with negligible resistance, is
free to slide along the rails. The system is in a region where a
425-mT magnetic field points perpendicular to the plane of the
rails, as shown in (Figure 1).
How fast should the bar be pulled in order to produce a current
of 0.150 A?
At what rate does...
A pair of conducting, parallel, frictionless rails is mounted on an insulating platform. The distance between...
A pair of conducting, parallel, frictionless rails is mounted on an insulating platform. The distance between the rails is L = 0.20 m. The rails are connected on one end by a R = 10.12 resistor. A conducting bar of mass 1.2 kg can slide on the rails without friction. When the conducting bar is at x = 0, the enclosed area of the loop is 0.03 m2. There is zero resistance in the conducting bar or rails. A uniform...
Two parallel conducting rails with negligible resistance are connected at one end by a resistor of...
Two parallel conducting rails with negligible resistance are connected at one end by a resistor of resistance R, as shown in the figure. The rails are placed in a magnetic field Bext, which is perpendicular to the plane of the rails. This magnetic field is uniform and time independent. The distance between the rails is f. A conducting rod slides without friction on top of the two rails at constant velocity v . Three-dimensional view ext ind Top view Bext...
Two parallel conducting rails with negligible resistance are41.0 {\rm cm} apart and are connected together...
Two parallel conducting rails with negligible resistance are
41.0 cm apart and are connected together at one end by an
18.8Ω resistor. A conducting bar, also with negligible
resistance, is free to slide along the rails. The system is in a
region where a 315 mT magnetic field points perpendicular to
the plane of the rails, as shown in (Figure 1). If the bar is
pulled along the rails at 5.69 m/s, what's the current in the
circuit comprising the...
please show work when possible so that I may better
understand. Thank you.
x=L The rail gun consists of two thick conducting rails connected to a power supply and there is a magnetic field assumed to be uniform and constant in the direction shown. A short conducting bar that is to be (or carry) the projectile is placed across the bars at x -0. The current flows through the bars as shown. The magnetic force on the bar causes it...
A pair of parallel conducting rails that are L = 22 cm apart lies at right angles to a uniform magnetic field of 0.7 T directed into the page, as shown in the figure below. A R = 172 resistor is connected across the rails. A conducting bar is moved to the right at 2 m/s across the rails. B into page R L 2 m/s ♡ ♡ ♡ 1) What is the current in the resistor? (Express your answer...
Example Variation Problem 27.30 Two parallel conducting rails with negligible resistance are 50.0 cm apart and are connected together at one end by an 16.8-2 resistor. A conducting bar, also with negligible resistance, is free to slide along the rails. The system is in a region where a 325-mT magnetic field points perpendicular to the plane of the rails, as shown in (Figure 1). Part A How fast should the bar be pulled in order to produce a current of...
A pair of conducting, parallel, frictionless rails is mounted on an insulating platform. The distance between the rails is L=0.30 m. A light conducting bar can slide on the rails without friction. When the conducting bar is at x = 0, the enclosed area of the loop is 0.03 m². There is zero resistance in the conducting bar or rails, the rails are connected on one end by a R=1.5 resistor. A uniform magnetic field of B -0.25 T is...
Two parallel conducting rails with negligible resistance are
50.0 cm apart and are connected together at one end by an 16.8-Ω
resistor. A conducting bar, also with negligible resistance, is
free to slide along the rails. The system is in a region where a
425-mT magnetic field points perpendicular to the plane of the
rails, as shown in (Figure 1).
How fast should the bar be pulled in order to produce a current
of 0.150 A?
At what rate does...
A pair of conducting, parallel, frictionless rails is mounted on an insulating platform. The distance between the rails is L = 0.20 m. The rails are connected on one end by a R = 10.12 resistor. A conducting bar of mass 1.2 kg can slide on the rails without friction. When the conducting bar is at x = 0, the enclosed area of the loop is 0.03 m2. There is zero resistance in the conducting bar or rails. A uniform...
Two parallel conducting rails with negligible resistance are connected at one end by a resistor of resistance R, as shown in the figure. The rails are placed in a magnetic field Bext, which is perpendicular to the plane of the rails. This magnetic field is uniform and time independent. The distance between the rails is f. A conducting rod slides without friction on top of the two rails at constant velocity v . Three-dimensional view ext ind Top view Bext...
Two parallel conducting rails with negligible resistance are
41.0 cm apart and are connected together at one end by an
18.8Ω resistor. A conducting bar, also with negligible
resistance, is free to slide along the rails. The system is in a
region where a 315 mT magnetic field points perpendicular to
the plane of the rails, as shown in (Figure 1). If the bar is
pulled along the rails at 5.69 m/s, what's the current in the
circuit comprising the...
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