Current Electricity and Electrical InstrumentHard
Question
A current passes through a wire of non-uniform cross-section. Which of the following quantities are independent of the cross-section?
Options
A.the charge crossing in a given time interval
B.drift speed
C.current density
D.free-electron density.
Solution
In series current remain same I = neAvd , J = I/A, for constant current vd ∝
and J ∝ .
and J ∝ . Create a free account to view solution
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