Physics
Grade-10
Easy
Question
Read the following statements and choose the correct option:
Statement A: Oersted, a Danish physicist first noticed the magnetic effect of electric current.
Statement B: The strength of the magnetic field is indicated by the closeness of the field lines.
- Statement A is true, B is false
- Both statement A and B are true
- Statement B is true, A is false
- Statement A is true, B is false
Hint:
Oersted, a Danish physicist first noticed the magnetic effect of electric current. The strength of the magnetic field is indicated by the closeness of the field lines.
The correct answer is: Both statement A and B are true
- Hans Christian Oersted a Danish physicist, observed that a compass needle next to a current-carrying wire turned so that the needle was perpendicular to the wire on April 21, 1820.
- This led him to formulate the law known as Oersted's Law, which states that a magnetic field is created when a steady electric current flows through it.
- Oersted conducted research and discovered what is now known as Oersted's law, a mathematical formula that determines how powerful a field is.
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