Is light fastest ? if not then how?

yea it is the fastest in my view

In one second, light travels approximately 186,270 miles (more than seven times the circle of the Earth). Light is recognized as the fastest object in the world, and its velocity in empty space is regarded as a basic constant of nature in contemporary physics.

50 inches should be the resultant vector

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it