Moving Charges and Magnetism · NEET Preparation Physics
A long straight wire carries a current I. The magnetic field at a perpendicular distance r from the wire is B. If the current is doubled and the dist…
Practice question from Moving Charges and Magnetism (NEET Preparation Physics), with the correct answer and a step-by-step solution.
easy · MCQ · Q-95DBA0
A long straight wire carries a current . The magnetic field at a perpendicular distance from the wire is . If the current is doubled and the distance is halved, the new magnetic field becomes:
- A.
- B.
- C.
- D.Correct answer
Solution
Magnetic field of a long straight wire is . If and , then .
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