2) A standard motional emf setup in the xy consists of a constant, uniform magnetic field which points into the page and has magnitude 0.25 T. The circuit's entire resistance is 2 Ohms at the location shown (on the movable rail). The movable rail (double-line on the right side of the circuit) is going left at a speed of 8 m/s. i. Which side of the resistor is at a lower electric potential due to the induction effect? A. Top B. Bottom C. Both are equal but nonzero D. Both are zero ii. The magnitude of the current through the resistor due to the induction effect will be A. 0.40 A B. 0.20 A C. 0.15 A D. 0.030 A E. Zero A+, Ⓡind -, Bind into page, I ind CW iii. Which way should the movable rail go so that the induced current is counterclockwise? A. Left 15 cm B. Right C. It should remain stationary D. None of these. There is no way a counterclockwise induced current can be created by moving the rail. AⓇ-, ind +, Bind out, I ind CCW 20 cm B 202

2) A standard motional emf setup in the xy consists of a constant, uniform magnetic field which points into the page and has magnitude 0.25 T. The circuit's entire resistance is 2 Ohms at the location shown (on the movable rail). The movable rail (double-line on the right side of the circuit) is going left at a speed of 8 m/s. i. Which side of the resistor is at a lower electric potential due to the induction effect? A. Top B. Bottom C. Both are equal but nonzero D. Both are zero ii. The magnitude of the current through the resistor due to the induction effect will be A. 0.40 A B. 0.20 A C. 0.15 A D. 0.030 A E. Zero A+, Ⓡind -, Bind into page, I ind CW iii. Which way should the movable rail go so that the induced current is counterclockwise? A. Left 15 cm B. Right C. It should remain stationary D. None of these. There is no way a counterclockwise induced current can be created by moving the rail. AⓇ-, ind +, Bind out, I ind CCW 20 cm B 202

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Voltage Across Inductor

An actor is a passive electrical component that consists of a coil bent in the form of wire which uses electromagnetism to produce electric current through the coil. When the electric current flows through a conductor that is the coil, a magnetic flux is developed around the conductor. This flow of current through the coil creates a magnetic field based on Fleming's Right-hand thumb rule. If there is any decrease in the current passing through the inductor, then the magnetic field will also decrease and energy is released through the generation of electric current. There is also a secondary voltage inducing in the same coil due to the magnetic flux, since it opposes any changes in the electric current flowing through the circuit. An inductor is also called choke, coil, or solenoid. A choke is designed to block certain frequencies when the DC current passes. A winding coil is coated with insulation to give extra insulation and protect the circuit. They are usually tightly wrapped around a central core which is cylindrical in nature so that the magnetic flux can be induced. The solenoid is a three-dimension coil that is used to exhibit electromagnetism when the magnetic field is developed due to the current flowing through the coil. The sign convention of the inductor is the same as the power dissipating device. When the current flows into the positive side of the voltage across the inductor, the value is positive and the inductor dissipates power whereas when the inductor releases the power back to the circuit, the current has a negative sign convention. 

Question

2) A standard motional emf setup in the xy consists of a constant, uniform magnetic field which
points into the page and has magnitude 0.25 T. The circuit's entire resistance is 2 Ohms at the
location shown (on the movable rail). The movable rail (double-line on the right side of the
circuit) is going left at a speed of 8 m/s.
i. Which side of the resistor is at a lower electric potential due to the induction effect?
A. Top
B. Bottom
C. Both are equal but nonzero
D. Both are zero
ii. The magnitude of the current through the resistor due to the induction effect will be
A. 0.40 A
B. 0.20 A
C. 0.15 A
D. 0.030 A
E. Zero
A+, Ⓡind -, Bind into page, I ind CW
iii. Which way should the movable rail go so that the induced current is counterclockwise?
A. Left
15 cm
B. Right
C. It should remain stationary
D. None of these. There is no way a
counterclockwise induced current
can be created by moving the rail.
AⓇ-, Pind +, Bind out, I ind CCW
20 cm
B
202

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