Q8. What if you were to start with the south pole of the bar magnet sitting in the front half of your coil and then rapidly pulled it out? (Answer questions on next page.) a) Is the flux within the coil increasing, decreasing, or remaining constant? Explain. b) What is the direction of Bo within the coil? c) What is the direction Bịnd within the coil? d) What is the direction of Ijng in the coil, when viewed from the front? e) Which way will the needle deflect? Again, use the simulation to verify your prediction. If you were incorrect, re-type the correct observations and determine why your prediction was off.

Q8. What if you were to start with the south pole of the bar magnet sitting in the front half of your coil and then rapidly pulled it out? (Answer questions on next page.) a) Is the flux within the coil increasing, decreasing, or remaining constant? Explain. b) What is the direction of Bo within the coil? c) What is the direction Bịnd within the coil? d) What is the direction of Ijng in the coil, when viewed from the front? e) Which way will the needle deflect? Again, use the simulation to verify your prediction. If you were incorrect, re-type the correct observations and determine why your prediction was off.

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

Bar Magnet

In physics, magnetism is a phenomenon exhibited by a magnetic substance that exerts either attractive or repulsive force. A bar magnet is either a rectangular or round and hollow fit comprised of ferromagnetic materials and has a fanciful attractive field surrounded by it.

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Two long wires carry 10 A currents in the directions shown in the figure (Figure 1). One wire is 20 cm above the other. 1. What is the magnitude of the magnetic field at a point halfway between them? Express your answer with the appropriate units. 2. What is the direction of that magnetic field? A. Downward and to the right, at an angle of 45∘ from both wires. B. Upward and to the left, at an angle of 45∘ from both wires. C. Upward and to the right, at an angle of 45∘ from both wires. D. Downward and to the left, at an angle of 45∘ from both wires.
Q7. If you were to move the north pole of a bar magnet into the front of your coil, what is the direction of the induced current when viewed from the front? To reach your conclusion, answer each of the following (see next page): Motion of the magnet as viewed from above. The arrows by the magnet indicate the direction in which the magnet moves, not necessarily the direction of B. a) Is the flux within the coil increasing, decreasing, or remaining constant? Explain in the space below. b) Viewing the coil “from the front", what is the direction of Bo within the coil? Done as an example to clarify perspective. "From the front" means looking into the coil. (X) (since B lines point away from "N") c) Viewing the coil “from the front", what is the direction Bind within the coil? d) What is the direction of Iind in the coil, when viewed from the front? e) Which way will the needle deflect?
Please explain how to find direction of the magnetic fields and the direction of the forces.
q8
Describe the origins of the magnetic field of the Earth. Describe what is meant by magnetic field strength and state its unit of measurement in SI units. Select one or more: a. Magnetic field strength is measured in amperes per meter squared. b. О с. d. The magnetic field strength B is the value of the current in the loop per unit area. The magnetic field of the earth is caused by electric currents inside the molten iron core of the Earth. The magnetic field strength B is defined as the force acting per unit current in a wire of unit length when the wire is perpendicular to the magnetic field lines. e. The magnetic field of the earth is caused by Earth's rotation around the Sun. ☐ f. Magnetic field strength is measured in Tesla.
Practice: Consider a straight current carrying wire with current flowing into the screen as shown in the figure below. What is the direction of magnetic field at the point P shown below? A. Upward B. Downward C. To the left D. To the right E. Out of screen