hi I don't exactly know how to approach this problem(adsbygoogle = window.adsbygoogle || []).push({});

Compute the electric field in air midway bewteen two point charges of 20*10^-8C and -5*10^-8C seperated by a distance of 10cm

i was thinking of finding V of both the charges and finding the difference between them

so V1 = k(20*10^-8C)/(.1m) - k(-5*-10^-8C)/(.1m)

where k = 9.0*10^9 N*m^2/C^2

then you know V then you can do V/r = E

am i even close???

thanks :)

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# Homework Help: Compute the electric field in air

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