(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A raindrop carrying a charge of 25x10^{-12}coulombs falls at a velocity of 5 m/s between the poles of a permanent magnet. It passes through a 50 mm long region in which the magnetic field density of 0.9 T is directed horizontally.

1) determine the lorentz force of the raindrop

2) ESTIMATE THE HORIZONTAL COMPONENT OF THE RAINDROP VELOCITY AFTER IT PASSES THROUGH THE MAGNETIC FIELD (DIAMETER DROP=1MM)

Joined, diagram of how i interpreted the text

2. Relevant equations

F=q*(vector v x vector B)=qvb in magnitude

3. The attempt at a solution

1) by applying the formula I got F=25.10^{-2}*5*0.9=1.125 N

However I do not understand question 2. For me the horizontal velocity component is equal to zero (going down) so it doesn't make sense to me.

Can someone explain it to me ? Thanks

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# Compute lorentz force from charge

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