fixed The drawing shows a copper wire (negligible resistance) bent into a circular shape with a radius of 0.40 m. The radial section BC is in place, while the copper bar AC sweeps around at an angular speed of 14 rad/s. The bar makes electrical contact with the wire at all times. The wire and the bar have negligible resistance. A uniform magnetic field exists everywhere, is perpendicular to the plane of the circle, and has a magnitude of 5.5 x 103 T. Find the magnitude of the current induced in the loop ABC. (into paper) Number 2.053E-2 Units X X A ww 3.00 X X 4 X X X Wire X

fixed The drawing shows a copper wire (negligible resistance) bent into a circular shape with a radius of 0.40 m. The radial section BC is in place, while the copper bar AC sweeps around at an angular speed of 14 rad/s. The bar makes electrical contact with the wire at all times. The wire and the bar have negligible resistance. A uniform magnetic field exists everywhere, is perpendicular to the plane of the circle, and has a magnitude of 5.5 x 103 T. Find the magnitude of the current induced in the loop ABC. (into paper) Number 2.053E-2 Units X X A ww 3.00 X X 4 X X X Wire X

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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L R = 5.00 Q X Xix x 1 |X X X X R P = FexV =8.50 J/s Fext W X xx x X X X X X X X X A rectangular wire loop of length L, width w, is pulled out of a constant, uniform magnetic field with constant velocity v. The loop has a resistance R. The magnetic field of magnitude B, points into the plane of the paper, and is confined to the rectangular region shown above. Work must be done on the loop at the rate of P, to move it through the magnetic field at constant velocity. Find the magnitude of the emf, & and the current I for the loop.
A) A constantan wire of length 12 m and having a cross sectional area 1.3x10-4 m² is converted into 2-turn square loop. It is connected to a voltage of 0.135 V. If the loop is placed in a uniform magnetic field of magnitude 0.65 T at an angle of 35 , then calculate torque in the square loop? If length is increased two time then what will be the effect on torque? (The resistivity (p) of constantan= 49 -8 х10 Ω.m.) (5 Marks) B) A small village station has two railway tracks (X and Y), made of different materials, for short range transportation. Both have initial length of 700 m. When temperature increases from 30C° to 45C°, then change in length for track 'X' is 0.1785 m and for track 'Y' is 0.3045 m. Through calculation, Identify the materials for track X and Y from table below. Explain which railway track will bend less if no gap is left and why? (3+2 Marks) Coefficient of Expansion (a), 1/C° Substance Aluminum 25 x 10-6 Brass or Bronze 19x 10-6 Brick 9x 10-6 Copper 17x 10-6 Glass…
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Suppose you have a long, skinny conductor that is oriented with its long axis parallel to a uniform magnetic field. Suppose also that the conductor is moving along its long axis in a straight line at constant velocity v. Despite the motion of the conductor, no motional emf is induced. Why? The magnetic field is too uniform The velocity has no component normal to the magnetic field The velocity is too low The conductor is so long and so thin that its electrical resistance is too high
QUESTION 1 https://per.physics.illinois.edu/per/IE/ie.pl?phys112/ie/08/IE_movingcoil X X X X XX X W X X X X XX X X X X X X X X X X X X X X X Lg At t=0, a rectangular coil of resistance R = 2 ohms and dimensions w = 3 cm and L = 8 cm enters a region of constant magnetic field B = 1.6 T directed into the screen as shown. The length of the region containing the magnetic field is LB = 15 cm. The coil is observed to move at constant vėlocity v = 5 cm/s. What is the force required at time t = 0.8 sec to maintain this velocity? Answer in uN (u = micro = EE-06)
17 A conducting bar of length L= 0.40m totates in a counterclockwise direction with a constant angular speed of +2.0 rad/s about a pivot Pat one end, as shown. A uniform magnetic field (magnitude 6.71) is directed into the paper. What is the poterntial difference, V-VA? out of question O a -0.27 V O b.0.27 V OC 0.80 V O d. -0.80 V O e 1.07 V
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Motional EMF Below is a rectangle that is being pulled into a magnetic field as shown. The rectangle has a height of h = 0.400 m and is being pulled to the right with a velocity of v = 188.0 m/s. This magnetic field starts where shown, so the left most side of the rectangle has no magnetic field. There is 1 loop with a total resistance of R = 15.40 Ohms. The magnetic field has a magnitude of B = 34.0 mT. That means as the loop moves to the right, the magnetic flux inside the loop is increasing. Magnetic Field (out of the page) Direction of velocity What is the induced current within the wire in this system? (Use a negative sign for clockwise current) Make sure to give your answer with appropriate significant figures and remember that you are looking for a magnitude. Your Answer: Answer units Height
A 5-turn conducting loop with a radius of 3.0 cm with axis of rotation in the plane of the paper spins at 60 revolutions per second in a magnetic field of 0.50 T that is perpendicular to the paper. The maximum emf generated is: 0.14 V 8.3 V 28 V 2.7 V 10.5 V
6. A loop of a wire has the shape shown in the drawing. The top part of the wire is bent into a semicircle of radius r = 0.18 m. The normal to the plane of the loop is parallel to a constant magnetic field of magnitude 0.88 T. What is the magnitude of the change in the magnetic flux that passes through the loop when, starting with the position shown in the drawing, the semicircle is rotated through quarter of a revolution? Wb B (into paper) 190of19 oof19 oon9 oof 19.0of19 oof19 o 19 0of19 oof19 oo of19 oof oof19 19 0of19 0of19 oof19 oof19 o0
The figure below shows a top view of a bar that can slide on two frictionless rails. The resistor is R = 5.00 , and a 2.50-T magnetic field is directed perpendicularly downward, into the page. Let l = 1.20 m. R X * X x X X xxxxxx X e xxxxx X X xxxx x x xx x x x xx x xxx xxx x → X x> * X X *F X x X X Bin app (a) Calculate the applied force required to move the bar to the right at a constant speed of 1.70 m/s. N (to the right) (b) At what rate is energy delivered to the resistor? W