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

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The quantity of charge q (Coulomb) passing through a surface of area 6 cm? 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 x 105 A/m?
b) J = 1,77 x 105 A/m²
c) J = 2,83 × 105 A/m2
d) J = 3,94 × 105 A/m²
e) J = 5,08 x 105 A/m²
Transcribed Image Text:The quantity of charge q (Coulomb) passing through a surface of area 6 cm? 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 x 105 A/m? b) J = 1,77 x 105 A/m² c) J = 2,83 × 105 A/m2 d) J = 3,94 × 105 A/m² e) J = 5,08 x 105 A/m²
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