Two plastic balls, 1 and 2 are rubbed together with a cloth until they both carry a uniformly disturbed charge of magnitude 0.10 NC. Ball 1 is negatively charged and ball 2 is positively charged. The balls are held apart by 900mm stick that turns to the centres of both balls
What is the magnitude of the dipole moment
The electric dipole moment is given by
"p=qd\\\\=(0.1\\times 10^{-9}\\:\\rm C)\\times(0.9\\: m)=9\\times 10^{-11}\\: C\\cdot m"
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