Q77.If →a and→b are perpendicular, then →a× (→a (→a (→a →b))) 4→ (1) →a b (2) →0 → 4→ 1 (3) →a× b (4) 2 →a b
What This Question Tests
The problem tests the understanding and application of vector triple product identity along with the property of perpendicular vectors (dot product is zero).
Concepts Tested
Formulas Used
a x (b x c) = (a.c)b - (a.b)c
a . b = 0 if a perpendicular to b
📚 NCERT Sections This Tests
4.4 — A Horizontal Overhead Power Line Carries A Current Of 90 A In East To
Physics Class 11 · Chapter 4
4.4 A horizontal overhead power line carries a current of 90 A in east to west direction. What is the magnitude and direction of the magnetic field due to the current 1.5 m below the line?
4.5 — What Is The Magnitude Of Magnetic Force Per Unit Length On A Wire
Physics Class 11 · Chapter 4
4.5 What is the magnitude of magnetic force per unit length on a wire carrying a current of 8 A and making an angle of 30º with the direction of a uniform magnetic field of 0.15 T?
4.7 — Two Long And Parallel Straight Wires A And B Carrying Currents Of
Physics Class 11 · Chapter 4
4.7 Two long and parallel straight wires A and B carrying currents of 8.0 A and 5.0 A in the same direction are separated by a distance of 4.0 cm. Estimate the force on a 10 cm section of wire A.
📋 Question Details
- Chapter
- Vectors
- Topic
- Vector Triple Product and Scalar Triple Product
- Year
- 2021
- Shift
- 26 Feb Shift 1
- Q Number
- Q77
- Type
- MCQ
- NCERT Ref
- Class 12 Mathematics Ch 10: Vector Algebra
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