A small 15.0 g plastic ball is suspended by a 30.0 cm string in a uniform electric field of
3000 N/C, as shown in the picture. If the ball is in equilibrium when the string makes a 45° angle with the vertical as indicated, what is the net charge on the ball?
Taking E Intensity of electric field
T Tension on string
M Mass of the ball
g Acceleration due to gravity
Charge of the plastic ball
Since the ball is equilibrium And
T sin qE
T cos mg
Tan
Where
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