MHT CET Physics question

Not in JEE Advanced syllabus

In order to adjust plane of coil of TG. In magnetic meridian:

(A)The A-pointer should be parallel to the coil
(B)The A-pointer should be perpendicular to the coilCorrect
(C)The magnetic needle should be perpendicular to the coil
(D)The magnetic needle should be inclined at with the coil

Answer: (B)

Solution

With no current the needle lies along the magnetic meridian, so the coil is in the meridian when the needle lies in the coil's plane; the aluminium pointer is fixed perpendicular to the needle,

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Question ID VK-078504