Physics
Grade-10
Easy
Question
The magnetic field around a current-carrying wire is:
- Nonuniform
- Uniform
- Radial
- Sometimes uniform sometimes nonuniform
Hint:
The magnetic field around a current-carrying wire is uniform in nature.
The correct answer is: Nonuniform
- A wire develops a ring-shaped magnetic field as current flows through it. The magnetic compass needle may be deflected by this magnetic field. Closer to the wire, the magnetic field is stronger, and its strength grows as the current does as well.
- A wire wound into a spiral shape makes up a solenoid. The solenoid functions as an electromagnet when an electric current is present. A solenoid has a powerful and consistent field inside.
- A greater overall magnetic field is created by the combination of the tiny magnetic fields produced by the current in each coil. The tiny magnetic fields generated by each wire outside the solenoid cancel each other out, leaving a considerably weaker field outside.
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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.
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Statement B: The strength of the magnetic field is indicated by the closeness of the field lines.
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An electric charge in motion produces:
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According to Oersted, around a straight conductor, a magnetic field exists:
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