Calculate electric field at a distance of 40 cm from the centre of sphere of radius 15 cm
carries a charge of 1.6 µc
Gives
r=40cm
Q=1.6"\\mu c"
R=15cm
"E=\\frac{kQ}{r^2}"
"E=\\frac{9\\times10^{9}\\times1.6\\times10^{-6}}{0.4^2}"
"E=9\\times10^4N\/c"
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