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Please explain the difference between Scalar and Vector quantity with example?

Dear Student,

Here is the answer to your question,

A scalar quantity has a magnitude only, whereas a vector quantity has both magnitude and a direction.
We can add two scalars of same kind algebraically, whereas vectors are added using the vector addition method.
Product of two scalars is always a scalar, but the product of two vectors may be a vector or a scalar depending on the type of product taken (cross product or dot product).
Examples of a scalar quantities are distance, speed etc. And examples of vector quantities are displacement, velocity etc.
 
Hope this helps,
Cheers!!

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 1 state ohn's law and describe a method for it varification.

2 state law of resistance and give its mathmatical expression.

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 hey buddy i noe d answer. Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points, and inversely proportional to the resistance between them.[1]

The mathematical equation that describes this relationship is:[2]

I = frac{V}{R}

where I is the current through the conductor in units of amperes, V is the potential difference measured across the conductor in units of volts, and R is the resistance of the conductor in units of ohms. More specifically, Ohm's law states that the R in this relation is constant, independent of the current.[3]

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how to noe whether to do cross product or scalar product?

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