A small, 2.00-g plastic ball is suspended by a 20.0-cmlong string in a uniform electric field, as shown in Figure P15.52. If the ball is in equilibrium when the string makes a 15.0° angle with the vertical as indicated, what is the net charge on the ball?FIGURE P15.52

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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.