Question

How many minimum number of coplanar vectors which represent same physical quantity having different magnitudes can be added to give zero resultant.

• A. (A)$2$
• B. (B)$3$
• C. (C)$4$
• D. (D)$5$

Answer 1

The correct option is B (B)$3$

As magnitude of the vectors are not equal so two vectors can not give zero resultant. According to triangle law of vector addition, minimum three vectors are needed to get zero resultant. From figure, $\overrightarrow{C}=\overrightarrow{A}+\overrightarrow{B}$

So, $\overrightarrow{A}+\overrightarrow{B}-\overrightarrow{C}=0$