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## anonymous 3 years ago how much energy would an electron acquire if it moved through a potential difference of 100kV?

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1. anonymous

E = eV where e is electron charge is equal to 1.67 x 10^-19. and V is potential different

2. anonymous

great! thank you :)

3. anonymous

i have one more...what is the force per meter of lenght on a wire carrying a .5A current due to a .5 tesla-magnetic field?

4. anonymous

Answer is very simple in natural units: Energy will be 100 keV

5. anonymous

Use $F = BIL$ for that one, but you will solve for $\frac{F}{L}$ to get the force per unit length.

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