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CBSE Class 10 Science Question 1 of 22

Magnetic Effects of Electric Current — Question 1

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Question

Question 1

Which of the following correctly describes the magnetic field near a long straight wire?

  1. The field consists of straight lines perpendicular to the wire.
  2. The field consists of straight lines parallel to the wire.
  3. The field consists of radial lines originating from the wire.
  4. The field consists of concentric circles centered on the wire.
Answer

The field consists of concentric circles centred on the wire.

Reason — The magnetic field near a long straight wire is concentric circles centred on the wire.