Check sibling questions

A constant current flowing in a horizontal wire in the plane of the paper from East to West is shown in Figure. The direction of magnetic field at a point will be from North to South: W E N S W E

(a) directly above the wire.

(b) directly below the wire.

(c) at a point located in the plane of the paper, on the north side of the wire.

(d) at a point located in the plane of the paper, on the south side of the wire.

Q-3  A constant current flowing - Teachoo.jpg

 

Answer:

RIGHT-HAND THUMB RULE - Teachoo.jpg

Using right-hand thumb rule, magnetic field lines appear in Clockwise direction ie., 

  • from South to North above the wire
  • from North to South below the wire

So, the correct answer is (b)

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Transcript

RIGHT-HAND THUMB RULE

CA Maninder Singh's photo - Expert in Practical Accounts, Taxation and Efiling

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CA Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Accounts and English at Teachoo