two charges 5u(meu)C and -20uC are placed thirty cm apart in the air.the strength of electric field at themid point between them is
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two charges 5u(meu)C and -20uC are placed thirty cm apart in the air.the strength of electric field at themid point between them is
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Verified answer
Charges are 5μC and -20μC.Distance between them = 30cm =0.3 m
r = 0.3/2 = 0.15 m
Strength of field at midpoint = [ + ]
= [ - ]
= (9×10^9) [ - ]
=