52. A charge +q is at the position a and a second charge – q is placed at – a as shown in the figure. What is the limiting form of the electric field for x ≫ a? (Coulomb’s constant is ) (A) (B) (C) (D) (E)

53. A 30-turn circular coil of radius 1 m and resistance 1 Ω is placed in a magnetic field directed perpendicular to the plane of the coil. The magnitude of the magnetic field varies in time according to the expression B = 0.1 t + 0.04 t2 , where B is in tesla and t is in second. Calculate the induced emf in the coil at t = 5 s. (A) 27 V (B) 37 V (C) 47 V (D) 57 V (E) 67 V

52. A charge +q is at the position a and a second charge – q is placed at – a as shown in the figure. What is the limiting form of the electric field for x ≫ a? (Coulomb’s constant is ) (A) (B) (C) (D) (E)

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52. A charge +q is at the position a and a second charge – q is placed at – a as shown in the figure. What is the limiting form of the electric field for x ≫ a? (Coulomb’s constant is )

(A)
(B)
(C)
(D)
(E)