An electret is similar to a magnet, but rather than being permanently magnetized, it has a permanent electric dipole moment. Suppose a small electret with electric dipole moment 1.0 × 10^-7 C m is 25 cm from a small ball charged to + 60 nC, with the ball on the axis of the electric dipole. A) What is the magnitude of the electric force on the ball?

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.