Statement of a problem № 41565


The dipole moment of the water molecule (H20) is 6.17 X 10-30 C. m. Consider a water molecule located at the origin whose dipole moment p points in the + x-direction. A chlorine ion (C1-), of charge -1.60 X 10-19 C, is located at x = 3.00 X 109 m. Find the magnitude and direction of the electric force that the water molecule exerts on the chlorine ion. Is this force attractive or repulsive? Assume that x is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis derived in Example 21.15 can be used.

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