Question

The magnetic effect due to current was discovered by \dots

• A. Maxwell
• B. Kirchhoff
• C. Oersted
• D. Henry

Hint:

Oersted’s experiment was the first evidence that electricity and magnetism are interconnected phenomena.

Answer 1

The Correct Option is C

Concept: The discovery of the magnetic effect of electric current established the relationship between electricity and magnetism and became the foundation of electromagnetism.

Step 1: Understand the historical experiment. In the year 1820, Danish scientist Hans Christian Oersted performed an experiment in which he placed a compass needle near a current-carrying conductor.

Step 2: Observe the result. When electric current passed through the wire, the compass needle got deflected from its normal north-south direction. This proved that electric current produces a magnetic field around the conductor.

Step 3: Identify the scientist. Therefore, the magnetic effect due to electric current was discovered by: \[ \boxed{\text{Oersted}} \] Hence, the correct option is (3).