Lesson: The Magnetic Field due to a Current in a Solenoid Physics
In this lesson, we will learn how to calculate the magnetic field produced by a current in a solenoid.
A length of wire is formed into a solenoid with turns of wire per millimeter. The wire carries a constant current . As a result, a magnetic field of strength can be measured at the center of the solenoid. Which of the following changes to the system would increase the magnetic field strength at the center of the solenoid, assuming everything else remains constant?
A solenoid is formed of a wire that carries a constant current of 0.16 A. The magnetic field at the center of the solenoid is measured to be T. Calculate the number of turns of wire per centimeter of the solenoid’s length, rounding to the nearest whole number of turns. Use a value of T⋅m/A for .
A wire is given the form of a solenoid that has 400 turns and a length of . The current in is and the strength of the magnetic field produced by at its center is . A second wire is used to form a solenoid that has 150 turns. and are connected end to end to form a solenoid . The spacing of the turns of is adjusted until the length of is and the turns of are equidistant from each other. The turns of are equal in radius to the turns of . The current in is , and the strength of the magnetic field produced by at its center is . Which of the following describes the relationship between and ?