<meta http-equiv="refresh" content="1; url=/nojavascript/">
You are reading an older version of this FlexBook® textbook: People's Physics Book Version 3 (with Videos) Go to the latest version.

# 12.9: Key Applications

Difficulty Level: At Grade Created by: CK-12
• In problems that ask for excess negative or positive charge, remember that each electron has one unit of the fundamental charge $e = 1.6 \times 10^{-19} \text{C}$.
• To find the speed of a particle after it traverses a voltage difference, use the equation for the conservation of energy: $q \Delta V = \tfrac{1}{2} m v^2$
• Force and electric field are vectors. Use your vector math skills (i.e. keep the x and y directions separate) when solving two-dimensional problems.

Feb 23, 2012

Jun 24, 2014