-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?

Question

Quizplus · Accepted Answer

The magnetic field strength inside a solenoid is inversely proportional to its length when the number of turns and current are constant. Stretching the solenoid increases its length, thereby decreasing the magnetic field strength. The new field strength is calculated by the ratio of the original and new lengths: (18 cm / 29 cm) * 2.0 T = 1.2 T.

-A Solenoid of Length 18 Cm Consists of a Wire