Asimple generator is used to generate a peak output voltage of 19.0 v . the square armature consists of windings that are 6.65 cm on a side and rotates in a field of 0.434 t at a rate of 49.8 rev/s . part a how many loops of wire should be wound on the square armature

One of the efficient concepts that can help us find the number of turns of the cable is through the concept of induced voltage or electromotive force given by Faraday's law. The electromotive force or emf can be described as,

Where,

N = Number of loops

B = Magnetic Field

A = Cross-sectional Area

= Angular velocity

Re-arrange to find N,

Our values are given as,

Replacing at our equation we have:

Therefore the number of loops of wire should be wound on the square armature is 32 loops

waves moving from a fast medium to a slow medium will experience a reflection as light travels more slowly than red light. total internal reflection occurs when the critical angle is.

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s