Two copper wires with different diameters are joined end to
end. If a current flows in the wire combination, what happens to
electrons when they move from the larger-diameter wire into the
smaller-diameter wire? Does their drift speed increase, decrease,
or stay the same? If the drift speed changes, what is the force that
causes the change? Explain your reasoning.

Question

Two copper wires with different diameters are joined end to
end. If a current flows in the wire combination, what happens to
electrons when they move from the larger-diameter wire into the
smaller-diameter wire? Does their drift speed increase, decrease,
or stay the same? If the drift speed changes, what is the force that
causes the change? Explain your reasoning.

ujjwal · Answer

The current remains same in an end to end (or series) connection ! so, with decrease in cross- sectional area, drift velocity must increase!

anonymous · Answer

n constant huncha ho??

radar · Answer

They experience an "impedance bump" which will affect the total current flow in the circuit.

ujjwal · Answer

yeah, current remains constant while th drift velocity increases in areas of less cross-section area..

And english ma bol.. aru le ni bujhda talai ramro! jhhan answer aauchha!