Two Solenoids,wound from Wire from the Same Spool,have the Same

Two solenoids,wound from wire from the same spool,have the same length and cross-sectional area,but solenoid №1 has half the turns of solenoid №2.If these solenoids are each connected to a circuit,and the only non-negligible resistance is that of the solenoids,which solenoid gives the greater time constant and by what factor?

A) №1 by a factor of 2
B) №2 by a factor of 2
C) №2 by a factor of 4
D) No answer above is completely correct.

Correct Answer:

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