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Question

The magnetic of ¯A×(¯AׯB) is equal to (θ is the angle between ¯A and ¯B)

A
A2Bsinθ
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B
|A|(¯AׯB)
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C
AB2sinθ
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D
|¯A||¯A||¯B|
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Solution

The correct option is A A2Bsinθ

Magnitude of

A×(A×B)=A×(ABsinθ)

=A2Bsinθ


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