Question

Match the terms of Column I with the items of Column II and choose the correct option from the codes given below.

Column I		Column II
A		1	The field lines of a current carrying finite solenoid
B		2	A field lines of electric dipole
C		3	The field lines of a bar magnet

• A. A-(2), B-(1), C-(3)
• B. A-(3), B-(1), C-(2)
• C. A-(1), B-(2), C-(3)
• D. A-(2), B-(3), C-(1)

Answer 1

Answer: (B)

The field lines of (a) a bar magnet (b) a current-carrying finite solenoid and (c) electric dipole. At large distances, the field lines are very similar. The curves labelled (i) and (ii) are closed Gaussian surfaces.