Vector addition: Minimum number of unequal vectors required to yield zero resultant Assume vectors lie in a plane as needed; they must be of unequal magnitudes. Choose the correct option.

Approach
Two vectors give zero resultant only if equal and opposite (thus equal magnitudes). For unequal magnitudes, at least three vectors can form a closed triangle → net zero.

Verification
Construct a triangle with three sides of different lengths; head-to-tail sum returns to origin ⇒ resultant 0.

Final Answer
3