1.

The following table has 3 columns and 4 rows. Based on table there are THREE questions. Each question has FOUR options (A) , (B) , ( C) and (D) . ONLY ONE of these four options is correct

Answer»

(III) (iv) ( R)
(I) (ii) (Q)
(IV) (iii) (R )
(I) (iv) (Q)

Solution :de = Bvdr
`epsilon = int_(0)^( R) (mu_(0)i)/(2PI(R+rcos theta)) xx( omegar ) dr`
Find `epsilon ` for DIFFERENT `theta`
Electric field at mid point = `(depsilon )/(dr) = B ( omega (R )/(2))`
Here `B =(mu_(0)i)/(2pi(R+rcos theta))+(mu_(0)r)/(2pi(2R-r cos theta))`


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