Physics Practice Problems Force and Torque on Current Loops Practice Problems Solution: A square wire 2.0 cm on each side is oriented so t...

Solution: A square wire 2.0 cm on each side is oriented so that a 5.00 mT magnetic field makes a 30.0° angle with the normal to the plane of the square. If a 1.0 mA current causes a 30.0 Nm torque on the wire, how many loops does the wire make? A) 4.2 x 1010 B) 1.5 x 1010 C) 3.0 x 106 D) 3.0 x 1010

Problem

A square wire 2.0 cm on each side is oriented so that a 5.00 mT magnetic field makes a 30.0° angle with the normal to the plane of the square. If a 1.0 mA current causes a 30.0 Nm torque on the wire, how many loops does the wire make?

A) 4.2 x 1010

B) 1.5 x 1010

C) 3.0 x 106

D) 3.0 x 1010