-A Solenoid of Length 18 Cm Consists of a Wire

question 22

Multiple Choice

-A solenoid of length 18 cm consists of a wire wrapped tightly around a wooden core.The magnetic field strength is 2.0 T inside the solenoid.If the solenoid is stretched to 29 cm by applying a force to it,what does the magnetic field become?

• A)1.2 T
• B)3.2 T
• C)15 T
• D)2.0 T

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