If we have a material with the same electrical properties in all directions, we define its resistivity p (the Greek letter "rho") as the ratio of E the magnitudes of the electric field E and the current density J: !! In vector form, The SI unit of resistivity is one-ohm meter (1 O:m, where the Greek letter "omega" stands for "ohm"). One ohm equals one volt per ampere (1 0 = 1 VIA). For many materials and devices, Georg Simon Ohm found that J is directly proportional to E at a given temperature. If so, p is constant and we say that the material or device follows Ohm's Law or that it is ohmic. Calculate the resistivity of a certain metal if an electric field of 7.2 x 10-3 V/m gives a current density of 1.20 x 105 A/m2 6.0 x 10-8 ohm-m 7.2 103 ohm-m O 12x 105 ohm-m 0.17 x 102 ohm-m Click Save and Submit to save and submit. Click Save All Ansuwers to save all answers.

If we have a material with the same electrical properties in all directions, we define its resistivity p (the Greek letter "rho") as the ratio of E the magnitudes of the electric field E and the current density J: !! In vector form, The SI unit of resistivity is one-ohm meter (1 O:m, where the Greek letter "omega" stands for "ohm"). One ohm equals one volt per ampere (1 0 = 1 VIA). For many materials and devices, Georg Simon Ohm found that J is directly proportional to E at a given temperature. If so, p is constant and we say that the material or device follows Ohm's Law or that it is ohmic. Calculate the resistivity of a certain metal if an electric field of 7.2 x 10-3 V/m gives a current density of 1.20 x 105 A/m2 6.0 x 10-8 ohm-m 7.2 103 ohm-m O 12x 105 ohm-m 0.17 x 102 ohm-m Click Save and Submit to save and submit. Click Save All Ansuwers to save all answers.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter16: Electromagnetic Waves

Section: Chapter Questions

Problem 78P: The prefix “mega” (M) and “kilo” (k), when referring to amounts of computer data, refer to factors...

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