Easy Physics- Magnetism Question: Thunder Bolt Strike Ground Near The Equator, What Direction Is It Deflected?

Question

A lightning bolt consisting of electrons moves from the cloud to the ground near the equator. It carries a current of 1.5x10^4 AMPS for a short period of time. What direction is the bolt deflected by the Earth's magnetic field? Why?

Answer 1

To do this, grab a ball (e.g. a basket ball or globe).  This is the earth.  Now picture magnetic lines moving from the north poll around the curve of the ball.  Using your right hand, point your fingers in the direction of these lines.  Now point your thumb into the "equator" of the ball.  Which way does your palm face?  (Answer:  West.)  Now remember, electrons are negative, so reverse your answer.

So the answer to your question is EAST.