First slide

Inductance

Question

When the number of turns and the length of the solenoid are doubled keeping the area of cross-section same, the inductance

Moderate

A

Remains the same
B

Is halved
C

Is doubled
D

Becomes four times

Solution

$L = μ_{0} \frac{N^{2}}{l} A$ When N and l are doubled, L is also doubled.

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