HELP PLZ!

if a force4.8x10^-2N is required to move a 40uc charge in an electric field bet. two pts 20cm apart. what is the potential difference between two points?

Question

HELP PLZ!

if a force4.8x10^-2N is required to move a 40uc charge in an electric field bet. two pts 20cm apart. what is the potential difference between two points?

random231 · Answer

do you know the relation between force on a charge in electric field and potential.

anonymous · Answer

i dont know sir .. 
will u help me to figure it out ...

random231 · Answer

ok so the force=electric field*charge

so, electric field = force/charge

potential=electric field*displacement
            
             =(force*displacement)/charge

random231 · Answer

can u do it now @patbigFat ?

anonymous · Answer

so PE= (4.8x10^-2)(20)/40? ryt?

random231 · Answer

mind the units dear!

random231 · Answer

you hav centimeters convert it to meters and also convert the micro coloumb to coloumb!

anonymous · Answer

ow sorry .
how to convert micro coul to coul?

random231 · Answer

1 micro coul = 10^-6 coul

anonymous · Answer

so PE = (4.8x10^-2)(20Cm)/40x10^-6 coulomb ?

random231 · Answer

20 cm = .2 m

anonymous · Answer

i forgot again .. sorry

random231 · Answer

u hav to convert ALL THE UNITS to standard or ur answer will be wrong!!!

anonymous · Answer

|dw:1392640524787:dw| is it correct?