Published by:
CGP EDU Academic Team
Published on: September 11, 2026
Magnetic effect of current was discovered by
Text Solution
Verified by ExpertsThe correct answer is:
B
Step 1: Review the historical context of discoveries in electromagnetism.
Step 2: Identify the key contributions of each scientist:
- **Faraday** is known for electromagnetic induction, not for discovering the magnetic effect of current.
- **Oersted** conducted experiments that showed that electric current creates a magnetic field, which is the foundation for the magnetic effect of current.
- **Ampere** studied the force between electric currents and is well known for Ampere's law but did not discover the effect itself.
- **Bohr** is primarily known for his model of the atom and quantum mechanics, not electromagnetism.
Step 3: Conclude that Oersted's experiments in 1820 provided the first evidence for the magnetic effect of electric current.
Therefore, the correct answer is B.
Step 2: Identify the key contributions of each scientist:
- **Faraday** is known for electromagnetic induction, not for discovering the magnetic effect of current.
- **Oersted** conducted experiments that showed that electric current creates a magnetic field, which is the foundation for the magnetic effect of current.
- **Ampere** studied the force between electric currents and is well known for Ampere's law but did not discover the effect itself.
- **Bohr** is primarily known for his model of the atom and quantum mechanics, not electromagnetism.
Step 3: Conclude that Oersted's experiments in 1820 provided the first evidence for the magnetic effect of electric current.
Therefore, the correct answer is B.
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