Question

You need to design a 60.0-Hz ac generator that has a maximum emf of 5400 V. The generator is to contain a 110-turn coil that has an area per turn of 0.71 m2. What should be the magnitude of the magnetic field in which the coil rotates?

Answer 1

given

V = 5400 V

f = 60 Hz

N = 110 turns

A = 0.71 m²

using equation

B = V /2 x 3.14 x f x N x A

= 5400 / 2 x 3.14 x 60 x 110 x 0.71

B = 0.18349 T  

so the magnitude of the magnetic field in which the coil rotates is B = 0.18349 T