Question

A wire loop with 7070 turns is formed into a square with sides of length ss. The loop is in the presence of a 1.60 T1.60 T uniform magnetic field →BB→ that points in the negative yy direction. The plane of the loop is tilted off the x-axisx-axis by θ=15∘θ=15∘. If i=2.50 Ai=2.50 A of current flows through the loop and the loop experiences a torque of magnitude 0.116 N⋅m0.116 N⋅m , what are the lengths of the sides ss of the square loop, in centimeters

Answer 1

0.116 = 70*2.50*s^2*1.6*sin15^o

s = 0.04 m

s = 4 cm