CBSE Class 10 Sample Paper Science Solution - For 2023 Boards

A compass needle is placed near a current carrying wire. State your observations for the following cases and give reasons for the same in each case-

  1. Magnitude of electric current in wire is increased.
  2. The compass needle is displaced away from the wire

 

Answer:

  1. The deflection in the compass needle increases.
    The Magnetic field of the current carrying conductor is directly proportional to the current flowing through it. 
  2. The deflection in the needle decreases as the magnetic field is inversely proportional to the perpendicular distance from the wire

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CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo