* Magnetic field sensor on your mobile phone You place a long wire next to your mobile phone on a table as shown in Figure P20.32. You run an application that allows you to measure the time dependence of the component of the B field that is perpendicular to the screen of the phone (let's call it B₂). While recording the magnetic field, you repeat the following steps: connect the wire to an AA battery, disconnect the battery, flip the battery (to swap + and terminals), again connect the wire to the battery... and so on. Using an ammeter, you also determine the current through the wire. Average values of your measurements are summarized in the table below. Figure P20.32 Wire Connection Battery (+,-) No battery Total Magnetic Field-35.28 By: -31.49 : 12.05 ▼+59NCH 15.33 Magnetometer I(A) 4.9 0 Battery (+) 4.9 B₂ (T) 122 x 10-6 52 x 10-6 -19 x 10-6 (a) Estimate the distance between the magnetic field sensor in your phone and the wire. (b) If the experiment was performed in New Jersey, determine the direction of the current in the wire (up or down) when the magnetic field reading is -19 x 10-6 T. Explain your reasoning. Indicate any assumptions that you made.

* Magnetic field sensor on your mobile phone You place a long wire next to your mobile phone on a table as shown in Figure P20.32. You run an application that allows you to measure the time dependence of the component of the B field that is perpendicular to the screen of the phone (let's call it B₂). While recording the magnetic field, you repeat the following steps: connect the wire to an AA battery, disconnect the battery, flip the battery (to swap + and terminals), again connect the wire to the battery... and so on. Using an ammeter, you also determine the current through the wire. Average values of your measurements are summarized in the table below. Figure P20.32 Wire Connection Battery (+,-) No battery Total Magnetic Field-35.28 By: -31.49 : 12.05 ▼+59NCH 15.33 Magnetometer I(A) 4.9 0 Battery (+) 4.9 B₂ (T) 122 x 10-6 52 x 10-6 -19 x 10-6 (a) Estimate the distance between the magnetic field sensor in your phone and the wire. (b) If the experiment was performed in New Jersey, determine the direction of the current in the wire (up or down) when the magnetic field reading is -19 x 10-6 T. Explain your reasoning. Indicate any assumptions that you made.

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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