Q.

(A) : If a physical quantity is a vector, it must have direction.
(R) : Electric Current has direction therefore it is a vector quantity.

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a

(A) is true but (R) is false

b

Both (A) and (R) are true and (R) is the correct explanation of (A)

c

Both (A) and (R) are false

d

Both (A) and (R) are true and (R) is not the correct explanation of (A)

answer is C.

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Detailed Solution

A vector must have direction and follows law of vector addition.

But, electric current does not follow law of vector addition. So, it is not a vector quantity.

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(A) : If a physical quantity is a vector, it must have direction.(R) : Electric Current has direction therefore it is a vector quantity.