1. The speed of the magnet decreases as it moves towards a coil, while the magnitude of the induced currentalso_D. no change, the magnitude of induced current also -B. increases; increases C. increase; decreasesC. decreasesA. increases2. As the strength of a magnet,A. decreases; increasesno change3. Electromotive force can be induced byA. Moving a magnet near a wireB. Moving the wire near the magnet4. Which of the statements is true when there is change in magnetic field in a closed loop of wire.A. There is no current induced in the wireB. zeroD. decreases;C. Changing magnetic field in a nearby wireD. All of theseC. Electromotive force is induced in thewireB. The induced current is free to move in any direction of the wire D. All of these5. Which of the following is NOT a way a magnetic field can be varied to induce a current in a wire?C. Change the strength of the magnetic fieldD. Move the coil out of the magnetic fieldA. Rotate the coil inside the magnetic fieldB. Move the coil in and out the magnetic field6. What are the two main applications for AC?B. Electric, magnetic C. Power, information7. The distance that a signal's energy can travel in the time it takes for one cycle to occur is called the signal's:C. Wavelength8. One oscilloscope selector knob that allows the major and minor divisions of the graticule to be used toA. Direct, pulsatingD. Static, dynamicA. AmplitudeB. FrequencyD. Perioddetermine asignal amplitude value is called the:A. Time/cm Control B. Position Control C. Intensity control D. Volts/cm control9. If current varies periodically from zero to a maximum, back to zero, and then repeats, the signal is:B. AlternatingC. PulsatingA. DirectD. Repetitive10. What voltage will an AC voltmeter display?A. RmsC. PeakB. Average11. What is the peak value of a household appliance that uses a 230 V ac source?D. Peak-to-PeakA. 163 VВ. 230 Vс. 325 VD. 480 V12. What is the waveform period difference between the 60 Hz electricity used in this country and the 50 Hzused in Europe?A. 3 msB. 16 msC. 4 msD. 20 ms

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Answered: 1. The speed of the magnet decreases as…

1. The speed of the magnet decreases as it moves towards a coil, while the magnitude of the induced current also A. increases B. zero C. decreases D. no change

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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1. A long solenoid that has 1,140 turns uniformly distributed over a length of 0.395 m produces a magnetic field of magnitude 1.00 10-4 T at its center. What current is required in the windings for that to occur? ______ mA 2. A wire with a weight per unit length of 0.077 N/m is suspended directly above a second wire. The top wire carries a current of 29.8 A and the bottom wire carries a current of 59.2 A. Find the distance of separation between the wires so that the top wire will be held in place by magnetic repulsion. _______ mm 3. A lightning bolt may carry a current of 1.00 104 A for a short time. What is the resulting magnetic field 170 m from the bolt? Suppose that the bolt extends far above and below the point of observation. _______ ?T 4. It is desired to construct a solenoid that will have a resistance of 4.80 Ω (at 20°C) and produce a magnetic field of 4.00 ✕ 10−2 T at its center when it carries a current of 4.35 A. The solenoid is to be constructed from copper wire having…