Two-point charges Q1 and Q2 having charges 5 μC and 15 μC respectively are placed along a straight line 10 m apart. Where approximately should be the 3rd charge of 4 μC be placed such that it is subjected to no force?
1
3.5 m from Q2 to the right
2
3.5 m from Q1 to the right
3
5 m from Q1 to the right
4
5 m from Q2 to the right