College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A wire loop with an area of 1.4×10−2 m2 is in a magnetic field of 0.36 T directed at a angle 30 to the plane of the loop. If the field drops to zero in 36 msms , what is the average induced emf in the loop?
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- A square loop of wire is held in a uniform 0.24 T magnetic field directed perpendicular to the plane of the loop.The length of each side of the square is decreasing at a constant rate of 5.0 cm/s. What emf is induced in the loop when the length is 12 cm?arrow_forwardConsider a square-shaped conducting coil with 50 turns of wire. Each turn of the wire has a length of the side equal to 14 cm. A uniform magnetic field is directed perpendicular to the plane of the coil. If the magnetic field changes linearly from 0 to 0.35-T in 0.40 s, what is the magnitude of the induced EMF inside the coil while the magnetic field is changing?arrow_forwardA coil consists of 200 turns of wire having a total resistance of 2.0 Ω. Each turn is a square of side 20 cm, and a uniform magnetic field directed perpendicular to the plane of the coil is turned on. If the field changes linearly from 0 to 0.50 T in 0.50 s, what is the magnitude of the induced emf in the coil while the field is changing?arrow_forward
- A coil of wire with 50 turns lies in the plane of the page and has an initial area of 0.310 m2. The coil is now stretched to have no area in 0.100 s. What is the magnitude and direction of the average value of the induced emf if the uniform magnetic field points into the page and has a strength of 1.25 T? Magnitude? ___ V Direction?arrow_forwardA magnetic field is directed at an angle of 40 degrees with respect to the plane of a square coil with s=1.5 m. If the magnetic field changes at a rate of 7 Tesla per 3 seconds and the coil has 1400 turns, what is the induced emf?arrow_forwardA triangle with equal 2 meters sides experiences a magnetic field with strength 2T exactly perpendicular to the wire. This small circuit also contains a resistor with a resistance measured at 2 ohms on one of these sides. If the magnetic field increases to 13.2 teslas over a 4.8 seconds, what is the induced current?arrow_forward
- A copper bar 90 cm long is perpendicular to a field of 0.75 Wb/m2 and moves at right angles to the field with a speed of 250 mm/s. Determine the EMF induced in the bar.arrow_forwardA coil of 1000 turns encloses an area of 50e4 cm2 and is in a magnetic field of strength 3e-6 T which is parallel to the loops area vector. What is the induced emf if the magnetic field changes to 0 in half a minute? 5.0e-7 V 2.5e-7 V 0.005 V 0.0025 Varrow_forwardA coil of 15 loops of wire is laying on the table. It experiences an increasing magnetic field going into the table. If the magnetic field goes from 0.15 T to 0.85 Tin one-third of a second and the coil has a diameter of 6 centimeters, determine the magnitude of the induced EMF and the direction of the induced currentarrow_forward
- A single circular loop of wire of radius 0.25m is positioned in a uniform magnetic field of 0.25T that points out of the page. What is the magnitude of the average EMF induced in the loop if it's orientation changes from being in the plane of the page to out of/into the page over a time period of 0.59seconds?arrow_forwardA fixed 17.4-cm-diameter wire coil is perpendicular to a magnetic field 0.56 T pointing up. In 0.29 s , the field is changed to 0.35 T pointing down. What is the average induced emf in the coil?arrow_forwardA coil consists of 200 turns of wire having a total resistance of 2.0 Q. Each turn is a square of side 18 cm, plane of the coil is turned on. If the field changes linearly from and a uniform magnetic field directed perpendicular to the 0 to 0.5 Tin 0.80 s, what is the magnitude of induced emf and current in the coil while the field is changing?arrow_forward
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