Two point charges of equal magnitude are 6.9 cm apart. At the midpoint of the line connecting them, their combined electric field has a magnitude of 48 N/C . Find the magnitude of the charges. q=____pC
Electric field, E = kq/r^2
E = 2[ kq/(r/2)^2] = 8 kq/r^2
Charge, q = Er^2/ 8k
q = (48 x 0.069^2)/(8 x 9 x 10^9) = 3.17 pC
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Two point charges of equal magnitude are 6.9 cm apart. At the midpoint of the line...
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