Assume that the current in a circuit is in a steady state. Unless it is explicit

Question

1. Assume that the current in a circuit is in a steady state. Unless it is explicitly mentioned in the statement, assume that the quantities that describe the behavior of the circuit are constant. Give ALL possible correct answers for the charge Q (i.e., B, AC, BCD...).
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4. A) If a wire's cross-section doubles the amount of current doubles
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6. B) Increasing the voltage difference in a wire segment increases the electron drift velocity
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8. C) Increasing the electric field in a wire segment doesn't affect the electron drift velocity
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10. D) If a wire's cross-section doubles the electron drift velocity is doubled
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12. E) The electric field increases in circuit segments that have higher electron mobility
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Explanation / Answer

4. true as i = V/R and R= rho L/A ----------> i = VA/rho L

6. true as Vd = i/neA and i = V/R ----------> Vd = V/neAR

8. false

10. false

12. fflase

so correct answer are AB

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