A circular solenoid of 100 tightly packed loops has length 10.0 cm, diameter 2.0 cm, and carries 0.50 A of current. (a) What is the magnitude of the magnetic field within solenoid? (b) If the coil is arranged appropriately so that it experiences a nonzero torque in the presence of a uniform external field of 0.030 T, what is the magnitude of the maximum torque on the solenoid?

A solenoid that is 122 cm long has a radius of 2.76 cm and a winding of 1280 turns; it carries a current of 4.34 A. Calculate the magnitude of the magnetic field inside the solenoid.

A single-turn square loop of wire, 2.00 cm on each edge, carries a clockwise current of 0.240 A. The loop is inside a solenoid, with the plane of the loop perpendicular to the magnetic field of the solenoid. The solenoid has 30.0 turns/cm and carries a 15.0 A. (a) Find the force on each side of the loop. magnitude × What is the direction of the magnetic field inside a solenoid. μN direction directed away from the center ▾ (b) Find the magnitude of the torque acting on the loop. This is the maximum torque that can be exerted on the current loop in this field. Think carefully about the orientation of the loop with respect to the field. N. m

For a solenoid in vacuum of length l = 10 cm with 10* turns per meter calculate the value of the current if the solenoid is placed in an external uniform magnetic field Bext = 35 µT with field lines exactly opposite to the field produced by the solenoid. Take vacuum permeability Ho = 4x x 10-7 H/m. Provide your answer in SI units. Answer: