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1. To obtain power from the current in the wire of your vacuum cleaner, you place a loop of wire near it to obtain an induced emf. How do you place and orient the loop? a. A loop of wire should be placed nearest to the vacuum cleaner wire to maximize the magnetic flux through the loop. b. A loop of wire should be placed farthest to the vacuum cleaner wire to maximize the magnetic flux through the loop. c. A loop of wire should be placed perpendicular to the vacuum cleaner wire to maximize the magnetic flux through the loop. d. A loop of wire should be placed at angle greater than 90° to the vacuum cleaner wire to maximize the magnetic flux through the loop. 2. A magneto is a device that creates a spark across a gap by creating a large voltage across the gap. To do this, the device spins a magnet very quickly in front of a wire coil, with the ends of the wires forming the gap. Explain how this creates a sufficiently large voltage to produce a spark. a. The electric field in the coil increases rapidly due to spinning of magnet which creates an emf in the coil that is proportional to the rate of change of the magnetic flux. b. The magnetic field in the coil changes rapidly due to spinning of magnet which creates an emf in the coil that is proportional to the rate of change of the magnetic flux.

1. To obtain power from the current in the wire of your vacuum cleaner, you place a loop of wire near it to obtain an induced emf. How do you place and orient the loop? a. A loop of wire should be placed nearest to the vacuum cleaner wire to maximize the magnetic flux through the loop. b. A loop of wire should be placed farthest to the vacuum cleaner wire to maximize the magnetic flux through the loop. c. A loop of wire should be placed perpendicular to the vacuum cleaner wire to maximize the magnetic flux through the loop. d. A loop of wire should be placed at angle greater than 90° to the vacuum cleaner wire to maximize the magnetic flux through the loop. 2. A magneto is a device that creates a spark across a gap by creating a large voltage across the gap. To do this, the device spins a magnet very quickly in front of a wire coil, with the ends of the wires forming the gap. Explain how this creates a sufficiently large voltage to produce a spark. a. The electric field in the coil increases rapidly due to spinning of magnet which creates an emf in the coil that is proportional to the rate of change of the magnetic flux. b. The magnetic field in the coil changes rapidly due to spinning of magnet which creates an emf in the coil that is proportional to the rate of change of the magnetic flux.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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No need to explain. Just please answer the 2 questions, thank you.
1. To obtain power from the current in the wire of your vacuum cleaner, you place a loop of wire near it to obtain an induced emf. How do you place and orient the loop? a. A loop of wire should be placed nearest to the vacuum cleaner wire to maximize the magnetic flux through the loop. b. A loop of wire should be placed farthest to the vacuum cleaner wire to maximize the magnetic flux through the loop. c. A loop of wire should be placed perpendicular to the vacuum cleaner wire to maximize the magnetic flux through the loop. d. A loop of wire should be placed at angle greater than 90° to the vacuum cleaner wire to maximize the magnetic flux through the loop. 2. A magneto is a device that creates a spark across a gap by creating a large voltage across the gap. To do this, the device spins a magnet very quickly in front of a wire coil, with the ends of the wires forming the gap. Explain how this creates a sufficiently large voltage to produce a spark. a. The electric field in the coil increases rapidly due to spinning of magnet which creates an emf in the coil that is proportional to the rate of change of the magnetic flux. b. The magnetic field in the coil changes rapidly due to spinning of magnet which creates an emf in the coil that is proportional to the rate of change of the magnetic flux.
Transcribed Image Text:1. To obtain power from the current in the wire of your vacuum cleaner, you place a loop of wire near it to obtain an induced emf. How do you place and orient the loop? a. A loop of wire should be placed nearest to the vacuum cleaner wire to maximize the magnetic flux through the loop. b. A loop of wire should be placed farthest to the vacuum cleaner wire to maximize the magnetic flux through the loop. c. A loop of wire should be placed perpendicular to the vacuum cleaner wire to maximize the magnetic flux through the loop. d. A loop of wire should be placed at angle greater than 90° to the vacuum cleaner wire to maximize the magnetic flux through the loop. 2. A magneto is a device that creates a spark across a gap by creating a large voltage across the gap. To do this, the device spins a magnet very quickly in front of a wire coil, with the ends of the wires forming the gap. Explain how this creates a sufficiently large voltage to produce a spark. a. The electric field in the coil increases rapidly due to spinning of magnet which creates an emf in the coil that is proportional to the rate of change of the magnetic flux. b. The magnetic field in the coil changes rapidly due to spinning of magnet which creates an emf in the coil that is proportional to the rate of change of the magnetic flux.
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