An Ideal Solenoid of Length 10 Cm Consists of a Wire

question 152

Multiple Choice

An ideal solenoid of length 10 cm consists of a wire wrapped tightly around a wooden core. The magnetic field strength is $4.0 \mathrm {~T}$ inside the solenoid. If the solenoid is stretched to $25 \mathrm {~cm}$ by applying a force to it, what does the magnetic field become?

• A)1.6 T
• B)10.0 T
• C)20 T
• D)4.0 T

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