A solenoid of length l metre has self inductance L henry. If number of turns

A solenoid of length l metre has self inductance L henry. If number of turns are doubled, its self inductance

Options

(a) Becomes 2 L henry
(b) Becomes 4 L henry
(c) Remains same
(d) Becomes L/√2 henry

Correct Answer:

Becomes 4 L henry

Explanation:

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