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```
How can energy be negative. Isnt it a scalar quantity?

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2 years ago

Himanshu Rathour
119 Points
```							Scalar quantities=quantities which don't have directionEnergy does not have direction ie we never say energy is given in east direction or in west.Negative energy simply means that energy of system will decrease by that much quantity.
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2 years ago
Sneha Harish
20 Points
```							We never can accurately measure energy of any system. What we measure is actually the change in energy of the system. The change is what is positive or negative.  Energy by itself can never be negative as no object can be so completely stable that is has it has zero energy. If zero energy itself is not possible, negative energy has no possibility. Hence energy is scalar and always positive.
```
2 years ago
Rohan agrawal
15 Points
```							We know that energy is a type of work done so ,       W = F . S (here F and S i.e. force and displacement are vector quantities , also it is a dot product )      So, dot product of vector quantities is always scaler, that's why we write -     W = FS cos(theta)
```
2 years ago
Karan Sharma
22 Points
```							Electric Current also has a negative sign which indicates the flow, still current is a scalar. Vectors have direction. But what separates them from scalars is that they are added by vector addition. Scalars can have a negative sign in them too. But they will never be added according to the vector addition.
```
2 years ago
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Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions