In an experiment designed to measure the Earth's magnetic field using the Hall effect, a copper bar 0.525 cmthick is positioned along an east-west direction. Assume n = 8.46 x 1028 electrons/m3 and the plane of thebar is rotated to be perpendicular to the direction of B. If a current of 8.00 A in the conductor results in aHall voltage of 4.47 x 10-12 v, what is the magnitude of the Earth's magnetic field at this location?

We know that Hall Voltage is given by: Vh = i*B/(n*q*L) B = n*q*L*Vh/i

In an experiment designed to measure the Earth's magnetic field using the Hall effect, a copper bar 0.525 cm thick is positioned along an east-west direction. Assume n = 8.46 × 1028 electrons/m³ and the plane of the bar is rotated to be perpendicular to the direction of B. If a current of 8.00 A in the conductor results in a Hall voltage of 4.47 × 10-12 v, what is the magnitude of the Earth's magnetic field at this location?

In an experiment designed to measure the Earth's magnetic field using the Hall effect, a copper bar 0.525 cm thick is positioned along an east-west direction. Assume n = 8.46 × 1028 electrons/m³ and the plane of the bar is rotated to be perpendicular to the direction of B. If a current of 8.00 A in the conductor results in a Hall voltage of 4.47 × 10-12 v, what is the magnitude of the Earth's magnetic field at this location?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter30: Magnetic Fields And Forces

Section: Chapter Questions

Problem 88PQ

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