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

question 108

Multiple Choice

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 radius of the solenoid is doubled to 2b, but all
The other quantities remain the same, the magnetic field inside the solenoid will

• A) become one-half as strong as initially.
• B) remain the same.
• C) become one-fourth as strong as initially.
• D) become twice as strong as initially.
• E) become four times as strong as initially.

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