Question

Write formula for dot product.
If xi + yj, then find its magnitude.
Diagram for triangle law of vectors.
Why electric current is not a vector even though it has direction?
Calculate the value of £.7.
If AB = AB, find the angle between A and B​

Answer 1

Given :  xi+yj,

To Find : Magnitude

Solution:

The magnitude of a vector is the length of the vector. The magnitude of the vector x i  + y j    is denoted as | x i  + y j  |

x i  + y j

Magnitude is  √(x² + y²)

| x i  + y j | =  √(x² + y²)

the magnitude of a 3d vector xi + yj + zk = √(x2+y2+z2)

magnitude​ of x i  + y j  is   √(x² + y²)

Current is phasor Quantity .

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