Consider an ideal solenoid of length L, N windings, and radius b (L is much longer than b). A current I is flowing through the wire windings. If the length of the solenoid becomes twice as long
(to 2L), but all other quantities remained the same, the magnetic field inside the solenoid will
A) become one-half as strong as initially.
B) become twice as strong as initially.
C) become one-fourth as strong as initially.
D) remain the same.
E) become four times as strong as initially.

Question

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The Answer of Consider an ideal solenoid of length L, N windings, and radius b (L is much longer than b). A current I is flowing through the wire windings. If the length of the solenoid becomes twice as long
(to 2L), but all other quantities remained the same, the magnetic field inside the solenoid will
A) become one-half as strong as initially.
B) become twice as strong as initially.
C) become one-fourth as strong as initially.
D) remain the same.
E) become four times as strong as initially.

Consider an Ideal Solenoid of Length L, N Windings, and Radius