How much work does an electric field do in moving a proton

  • Thread starter mathcrzy
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  • #1
mathcrzy
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Homework Statement



How much work does the electric field do in moving a proton from a point with a potential of +95 V to a point where it is -37 V? Express your answer both in joules and electron volts.
_____eV
_____J

Homework Equations



deltaPE = q * Vba

The Attempt at a Solution



PE = (-1.6e-19)(138)
PE = 2.2e-17 J

1.6e-19 / 12.2e-17 = .007 eV
 

Answers and Replies

  • #2
Ouabache
Science Advisor
Homework Helper
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you may want to recheck your calculation for Vba.
 
  • #3
mgb_phys
Science Advisor
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You might also think about why you use eV for the units and what step this migth save you!
 

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