A tightly wound solenoid 15 cm long has 350 turns and carries a current of 3.0 A. If you ignore end effects, you will find that the value of at the center of the solenoid when there is no core is approximately

Question

A tightly wound solenoid 15 cm long has 350 turns and carries a current of 3.0 A. If you ignore end effects, you will find that the value of  at the center of the solenoid when there is no core is approximately

Quizplus · Accepted Answer

The formula for the magnetic field inside a solenoid with no core is given by B = μ0 * n * I, where μ0 is the vacuum permeability (4π x 10^-7 T*m/A), n is the number of turns per unit length (n = N/L), and I is the current.

Plugging in the given values, we have:
n = N/L = 350/0.15 = 2333.3 turns/m
B = μ0 * n * I = 4π x 10^-7 * 2333.3 * 3.0 = 8.8 mT

Therefore, the best choice is D.

A Tightly Wound Solenoid 15 Cm Long Has 350 Turns μ\muμ

A Tightly Wound Solenoid 15 Cm Long Has 350 Turns $\mu$