Which One of the Following Statements Concerning the Magnetic Field

question 8

Multiple Choice

Which one of the following statements concerning the magnetic field inside (far from the surface) a long, current-carrying solenoid is true?

• A)The magnetic field is zero.
• B)The magnetic field is non-zero and nearly uniform.
• C)The magnetic field is independent of the number of windings.
• D)The magnetic field is independent of the current in the solenoid.
• E)The magnetic field varies as 1/r as measured from the solenoid axis.