The figure shows the orientation of a rectangular loop consisting of 78 closely wrapped turns each carrying a current I. The magnetic field in the region is (40 i) mT. The loop can turn about the y axis. If 0 30°, a = 0.7 m, b = 0.6 m, and I = 6 A, what is the magnitude of the torque exerted on the loop? Select one: O a. 5.2 N-M Ob. 6.8 N-M Oc. 3.9 N-M Od. 7.9 N-M

A radio is placed inside a bird cage. Which of the following will happen? Nothing will happen The bird will get very angry because its home has been taken from it The radio will stop receiving a signal, because the bird cage acts as a farady cage, blocking out the external electric field The radio will sound clearer, because the bird cage acts as a conductor, amplifying the external electric field

what is the speed of an electron if the force generated is 3.72-N and the magnetic field strength is 4.21-T?

Explain the concept of fiber optics as a transmission medium. Discuss its advantages over traditional copper cables and its applications in high-speed data transmission.