The quantity of charge q (Coulomb) passing through a surface of area 6 cm² changing with time as q = 4t³ + 5t + 6 (t is in units of seconds). Find the current density at t = 5 s. a) J = 8,5 × 105 A/m² b) J = 1,77 × 105 A/m² c) J = 2,83 × 105 A/m² d) J = 3,94 × 105 A/m² e) J = 5,08 × 105 A/m²

The quantity of charge q (Coulomb) passing through a surface of area 6 cm² changing with time as q = 4t³ + 5t + 6 (t is in units of seconds). Find the current density at t = 5 s. a) J = 8,5 × 105 A/m² b) J = 1,77 × 105 A/m² c) J = 2,83 × 105 A/m² d) J = 3,94 × 105 A/m² e) J = 5,08 × 105 A/m²

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 24P: A conductor carries a current that is decreasing exponentially with time. The current is modeled as...

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