Why electric current is considered as scalar quantity still it require direction ?

Asked by Yash Sahu | 8th Jun, 2013, 09:43: PM

Expert Answer:

Every quantity having direction need not be a vector. because if a physical quantity is to be regarded a vector, it has to satisfy certain conditions like
i) it should be added by parallelogram law
ii) it should be resolvable into components
iii) its addition should follow commutative law etc.,
 
 
In the case of electric current, its addition doesn't follow the parallelogram law, though it has a direction. hence it is a scalar but not a vector. 

Answered by  | 9th Jun, 2013, 06:16: AM

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