engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Physics Electric Charges and Coulomb's Law Coulomb’s Law
Three point charges 4q, Q and q are placed on a straight line respectively at distance 0, 1/2 and 1. If the resultant force on q is zero, the value of Q will be -
1
-q
2
-2q
3
-q/2
4
4q