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two similar sphere having plus q and minus q charge are kept at certain distance f force acts between the two if in the middle of two Sphere another similar sphere having plus q is kept than it experience a force in magnitude direction as
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Asked by yashpalnirmalkar3 | 27 Oct, 2023, 10:29: PM
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Let two charges +q and -q are separated by distance 2r and a positive charge +q is placed at middle as shown in figure.
 
Charge +q at middle experiences repulsive force due to +q charge at left side and attractive force due to -q charge at right side.
 
Magnitude of these repulsive and attractive forces are equal because distance r between charges are equal .
 
Direction of both the forces is same , i.e. from charge at middle to charge at right side as shown in figure.
 
Magnitude of net force F is
 
begin mathsize 14px style F space equals space 2 space cross times space fraction numerator q squared over denominator 4 straight pi straight epsilon subscript straight o space straight r squared end fraction end style
where εo is permittivity of free space
Answered by Thiyagarajan K | 28 Oct, 2023, 10:41: AM
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