two equal charge are separated by 12 cm in air an attractive force of 90 n acts on each charge then the each charge is
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let the charges be q then
by using formula
f=9*10^9q²/r2
here r=0.12
f=90
now
0.12*0.12*90=9*10^9*q²
=>q²=0.144*10^-9
by using formula
f=9*10^9q²/r2
here r=0.12
f=90
now
0.12*0.12*90=9*10^9*q²
=>q²=0.144*10^-9
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