Physics · Vector Algebra

Let A be a vector quantity such that |A| is a non-zero constant. Which of the following expressions is always true for the vector cross product of A with itself?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1A × A > 0
2A × A = 0✓
3A × A < 0
4A · A = 0

Correct answer

A × A = 0

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Let A be a vector quantity such that |A| is a non-zero constant. Which of the following expressions is always true for the vector cross product of A with itself?

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Let A be a vector quantity such that |A| is a non-zero constant. Which of the following expressions is always true for the vector cross product of A with itself?

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