Solenoid Inductance and Length
A solenoid inductor has N turns, a cross-sectional area A, and a length l. If the length of the solenoid is doubled while its number of turns and cross-sectional area remain constant, how does its inductance change?
A
Remains unchanged
B
Decreases by a factor of 2
C
Decreases by a factor of 4
D
Increases by a factor of 2
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